How to Choose a Scale for Watch Parts

Posted by AWS Team on Sep 15th 2026

Choosing a scale for watch parts starts with understanding exactly:

what you intend to weigh.

Watchmaking involves an unusually wide range of component weights.

A watchmaker may work with:

Tiny screws
Springs
Pins
Washers
Jewels
Watch hands
Gears
Crowns
Stems
Movement components
Complete movements
Cases
Case backs
Buckles
Clasps
Bracelets
Complete watches
Batches of replacement components

The scale that works well for a complete watch may not provide enough displayed detail for an extremely lightweight movement component.

Likewise, a scale designed to measure tiny screws to:

0.001g

may not have enough capacity to weigh:

a case, bracelet or complete watch.

That means you should not choose a watch-parts scale according to:

decimal places alone.

Instead, use this process:

identify the smallest component → identify the heaviest complete load → determine required readability → choose capacity → check platform size → account for trays → evaluate tare → review calibration → consider repeatability and environment → decide whether one or two scales are needed.

Quick Answer: How Do You Choose a Scale for Watch Parts?

Follow these steps:

List the watch parts you actually weigh.
Identify your lightest meaningful component.
Identify your heaviest complete load.
Decide whether you need 0.001g or 0.01g readability.
Choose enough maximum capacity.
Include tray or container weight.
Leave capacity headroom.
Check minimum usable load where specified.
Evaluate platform dimensions.
Make sure the scale has tare.
Review calibration requirements.
Check whether the calibration weight is included.
Consider repeatability.
Consider vibration, airflow and static.
Decide whether piece counting is useful.
Choose appropriate power options.
Decide whether portability matters.
Consider a two-scale setup if your weight range is unusually broad.

For many general watchmaking applications:

500g × 0.01g

is an excellent starting specification.

For tiny individual components requiring finer displayed increments:

0.001g

may be more appropriate.

American Weigh Scales provides several compact options in its Pocket Scales collection.

Step 1: List Everything You Need to Weigh

Do not begin by shopping for:

“the most precise scale.”

Begin by making:

a watch-parts list.

For example:

Tiny screw
Spring
Pin
Watch hand
Gear
Crown
Stem
Movement
Case
Bracelet
Complete watch

Your required scale specifications become much clearer once:

the working range is defined.

Step 2: Identify the Lightest Meaningful Component

Ask:

What is the lightest object whose weight I actually need to distinguish?

This is important because:

not every watchmaker needs milligram readability.

Suppose your smallest relevant component weighs approximately:

2g.

A 0.001g scale may provide:

far more displayed detail than your workflow requires.

But suppose you routinely compare:

extremely lightweight screws, springs or movement components.

Then:

0.001g readability

may be useful.

Step 3: Identify the Heaviest Complete Load

Next ask:

What is the heaviest thing that will actually sit on the scale?

This might be:

Complete movement
Case
Bracelet
Complete watch
Batch of parts
Watch plus weighing tray

Do not calculate capacity according to:

the watch part alone.

Calculate:

watch part + tray + container = complete physical load.

Step 4: Understand Readability

Readability describes:

the smallest displayed increment.

Common specifications include:

0.1g

One-tenth of a gram.

0.01g

One-hundredth of a gram.

0.001g

One-thousandth of a gram.

AWS explains these specifications further in its guide to what 500g × 0.01g means on a digital scale.

Step 5: Decide Whether You Need 0.001g

A 0.001g scale displays:

one-milligram increments.

This may be useful for:

Tiny screws
Lightweight springs
Small pins
Watch hands
Tiny gears
Jewels
Very small movement components

AWS's Best Milligram Scales guide compares multiple scales with 0.001g readability for fine measurement work.

Step 6: Do Not Choose 0.001g Just Because It Has More Digits

This is a common mistake.

Suppose:

Scale A = 50g × 0.001g

Scale B = 500g × 0.01g

Scale A displays:

one additional decimal place.

But suppose your complete watch weighs:

175g.

Scale A cannot weigh it.

The additional decimal place provides:

no benefit.

Step 7: Understand 0.01g Readability

A 0.01g scale displays:

hundredths of a gram.

Examples:

12.35g

37.84g

158.26g

For general watchmaking:

this is an extremely practical level of readability.

Step 8: When 0.01g Is a Strong Choice

Consider 0.01g for:

Crowns
Stems
Larger movement components
Complete movements
Cases
Case backs
Buckles
Bracelets
Complete watches
Batches of parts

For a user who wants:

one general-purpose watch scale,

500g × 0.01g can be a particularly useful combination.

Step 9: Do Not Confuse Readability With Accuracy

Suppose a scale displays:

25.347g.

That means it has:

0.001g readability.

It does not automatically mean:

the true mass is guaranteed within ±0.001g.

Measurement performance can also involve:

Accuracy
Repeatability
Minimum usable load
Calibration
Linearity
Stability
Environmental conditions

More decimal places do not automatically mean:

more accurate measurements.

Step 10: Choose Maximum Capacity

Once you know your readability requirement:

determine capacity.

Common precision-scale capacities include:

20g

50g

100g

500g

and higher.

The correct capacity should comfortably exceed:

your largest normal physical load.

Step 11: Include the Weighing Tray

Suppose:

Watch movement = 38g

Tray = 17g

Total physical load:

38 + 17 =

55g.

50g scale

does not have enough capacity.

Even though:

the movement itself weighs only 38g.

Step 12: Understand Tare Correctly

Tare lets you:

remove the displayed weight of a container.

Example:

Place tray on scale.

Display:

15.27g

Press:

TARE.

Display:

0.00g

Add movement.

Display:

31.82g

This makes the measurement easier to read.

But:

the tray is still physically sitting on the scale.

Step 13: Tare Does Not Increase Maximum Capacity

Suppose:

Scale capacity = 50g

Tray = 15g

After taring:

the display reads zero.

But you still have only approximately:

35g

of physical capacity available.

This is particularly important when choosing:

low-capacity milligram scales.

Step 14: Leave Capacity Headroom

Avoid choosing a scale that will routinely operate:

right at maximum capacity.

Suppose your heaviest complete load is:

490g.

500g scale

provides very little headroom.

A higher-capacity model may be more appropriate.

Step 15: Consider Minimum Usable Load

Maximum capacity tells you:

the upper limit.

But for tiny watch components:

the lower end matters too.

Do not assume:

0.001g readability

means every 0.001g object is necessarily an appropriate measurement load.

Review available manufacturer specifications for:

Minimum load
Accuracy
Repeatability

where provided.

Step 16: Check Repeatability

Repeatability matters when comparing:

tiny watch components.

Suppose the same screw produces:

0.084g

across repeated measurements.

That demonstrates:

consistent displayed results under those conditions.

If measurements fluctuate considerably:

additional decimal places become less useful.

Step 17: Test Repeatability Properly

A simple test:

Place component on scale.
Allow reading to stabilize.
Record weight.
Remove component.
Allow scale to return to zero.
Replace component.
Record again.
Repeat several times.

Do not simply:

leave the object on the platform

and read the same display repeatedly.

Step 18: Choose the Right Platform Size

Capacity is not enough.

The object needs to:

fit securely.

A small platform can be excellent for:

tiny screws.

It may be awkward for:

a complete watch or bracelet.

Step 19: Platform Size for Tiny Components

For:

Screws
Springs
Pins
Gears
Jewels

a compact platform combined with:

a small weighing tray

can work well.

Step 20: Platform Size for Complete Movements

A movement needs enough room to:

sit securely

without contacting:

the surrounding workbench.

A larger platform is generally easier to use.

Step 21: Platform Size for Bracelets

Bracelets can:

extend beyond the weighing platform.

This is not necessarily a problem if:

the complete bracelet remains supported by the scale

and does not touch:

the surrounding table.

If part of the bracelet rests on the workbench:

the measurement will not represent the full load.

Step 22: Platform Size for Complete Watches

A complete watch should:

sit securely on the scale.

Avoid setups where:

the watch partially touches another surface.

Step 23: Consider the AWS SC501g for General Watch Parts

The AWS SC501g Precision Digital Pocket Scale provides:

500g maximum capacity
0.01g readability
3.9 × 3.7-inch platform
Stainless-steel weighing surface
Tare
Two expansion trays
Multiple weighing units
Battery operation

AWS specifies:

a 500g calibration weight

for calibration,

which is not included.

For general watchmaking:

500g × 0.01g provides enough flexibility for many:

Movements
Cases
Bracelets
Complete watches
Component batches

while retaining:

fine hundredth-gram readability.

Step 24: Consider a Milligram Scale for Tiny Watch Parts

If your primary work involves:

very small components,

consider:

0.001g readability.

Possible capacity ranges include:

20g

50g

100g.

Step 25: 20g × 0.001g

This configuration can work for:

extremely lightweight parts.

But remember:

20g is a low maximum capacity.

If your tray weighs:

8g,

your remaining physical capacity is approximately:

12g.

Step 26: 50g × 0.001g

This provides:

more flexibility.

It can handle:

a larger tray

or:

heavier groups of tiny components

while retaining:

milligram readability.

Step 27: 100g × 0.001g

For users who need:

milligram readability

but find:

20–50g too restrictive,

100g capacity can be useful.

The tradeoff is usually:

a larger or more specialized scale format.

Step 28: GEMINI-50 for Watch Parts

AWS's GEMINI-50 provides:

50g × 0.001g.

It is designed for:

fine measurement work.

The model includes:

20g calibration weight
Tweezers
Weighing pan
Multiple units

For tiny watch components:

this configuration provides significantly finer displayed increments than:

500g × 0.01g.

Step 29: Choose Between GEMINI-20 and GEMINI-50

Both provide:

0.001g readability.

The primary difference is:

capacity.

GEMINI-20:

20g.

GEMINI-50:

50g.

For many watch-parts users:

50g offers greater flexibility.

Step 30: Consider Calibration Requirements

Before purchasing:

check exactly how the scale is calibrated.

Ask:

What calibration mass is required?
Is it included?
What procedure is used?
How easy is recalibration?

Calibration requirements differ:

by model.

Step 31: Use the Correct Calibration Mass

Do not use:

Coins
Watch batteries
Screws
Cases
Bracelets
Jewelry
Household objects

as substitutes for:

appropriate calibration masses.

Use:

the reference mass specified by the manufacturer.

Step 32: Do Not Confuse Calibration With Tare

Calibration:

relates scale response to a known reference mass.

Tare:

subtracts a container from the displayed measurement.

Zero:

establishes the zero reference.

These are:

different functions.

Step 33: Consider the Working Environment

A scale that performs well on:

a stable bench

may behave differently on:

an unstable surface beside a fan.

Precision measurement depends partly on:

the environment.

Step 34: Choose a Stable Workbench

Place the scale on:

a rigid, level surface.

Avoid:

Flexible tables
Soft furniture
Moving benches
Uneven counters

Step 35: Keep the Scale Off Soft Watch Mats

A watchmaker may use:

soft mats

to protect watches.

But the scale itself should ideally sit on:

a stable, rigid surface.

Do not allow the scale to:

rock or flex.

Step 36: Avoid Vibration

Possible vibration sources include:

Polishing equipment
Speakers
Machinery
Heavy footsteps
Unstable tables

This becomes increasingly important with:

0.001g measurements.

Step 37: Avoid Airflow

Direct airflow from:

Fans
HVAC vents
Open windows

can influence:

extremely lightweight measurements.

For milligram work:

keep the weighing area protected from drafts.

Step 38: Consider Static

Tiny watch parts may be affected by:

static electricity.

If a very lightweight component produces:

unstable measurements,

consider environmental factors before concluding:

the scale is defective.

Step 39: Consider Temperature Stability

Precision scales generally perform best in:

stable operating environments.

Avoid dramatic temperature changes immediately before:

fine measurements.

Step 40: Consider a Draft Shield

For 0.001g work:

a draft shield can help reduce:

air movement.

This can be particularly useful for:

tiny screws, springs and lightweight movement components.

Step 41: Consider Tare Essential

For watchmaking:

tare is one of the most useful features.

Tiny parts can:

roll or become lost.

A small tray provides:

containment.

Tare allows the scale to display:

the component weight separately.

Step 42: Consider Expansion Trays

Expansion trays are useful for:

Screws
Pins
Crowns
Springs
Washers
Gears

They can also help with:

small component batches.

Step 43: Consider Tweezers

Tiny watch components can be:

difficult to handle.

Tweezers can make it easier to:

place and remove parts

without:

touching or dropping them.

Step 44: Consider Piece Counting

If you sell or inventory:

identical watch components,

piece counting may be useful.

Examples:

100 identical screws

50 identical washers

200 identical pins

The scale estimates quantity using:

average individual piece weight.

Step 45: Know the Limits of Piece Counting

Piece counting works best when:

individual components have consistent weights.

It becomes less reliable when:

parts vary significantly.

Do not mix:

different screw sizes

and expect accurate weight-based counting.

Step 46: Consider the Display

A backlit LCD can make:

recording measurements easier.

This is particularly useful on:

watchmaking benches

where detailed visual work is already demanding.

Step 47: Consider Multiple Units

For most watch work:

grams

are straightforward.

However, scales may also offer:

Ounces
Troy ounces
Pennyweight
Carats
Grains

This can be useful when the same workstation handles:

jewelry or precious-metal items.

Step 48: Consider Portability

A compact scale can be useful for:

Traveling watchmakers
Dealers
Collectors
Auctions
Trade shows
Mobile repair

AWS's Pocket Scales collection provides multiple compact formats.

Step 49: Consider Power Source

Battery power is useful for:

portability.

AC power can be useful for:

permanent workstations.

If the scale will remain:

on a repair bench all day,

power options may influence convenience.

Step 50: Decide Whether One Scale Is Enough

Now combine:

your smallest and largest measurements.

Example:

Tiny screw = 0.035g

Crown = 1.75g

Movement = 31.50g

Case = 62.30g

Bracelet = 97.25g

Complete watch = 181.40g

500g × 0.01g

scale can handle:

all of these physically.

But it may not provide enough displayed detail for:

the 0.035g screw.

Step 51: When One Scale Works

Suppose your normal range is:

Crown = 2.5g

Movement = 30g

Case = 60g

Watch = 170g

and you do not require:

milligram-level component comparison.

Then:

500g × 0.01g

may cover the entire workflow.

Step 52: When Two Scales Are Better

Suppose you routinely weigh:

0.025g screws

and:

200g complete watches.

A two-scale setup can provide:

better specialization.

Scale 1

50–100g × 0.001g

for:

tiny components.

Scale 2

500g × 0.01g

for:

larger components and complete watches.

Watch Parts Scale Selection Table

What You Weigh	Readability to Consider	Capacity to Consider
Tiny screws	0.001g	20–100g
Springs	0.001g	20–100g
Pins	0.001g	20–100g
Hands	0.001g	20–100g
Jewels	0.001g	20–100g
Small gears	0.001g	20–100g
Crowns	0.001–0.01g	50–500g
Stems	0.001–0.01g	50–500g
Movement parts	0.001–0.01g	50–500g
Complete movements	0.01g	100–500g
Cases	0.01g	200–500g+
Bracelets	0.01g	200–500g+
Complete watches	0.01g	500g
Component batches	0.01g	500g+

These are:

starting points,

not universal requirements.

Choosing a Scale for Watch Screws

For extremely lightweight individual screws:

consider:

0.001g.

If you are weighing:

large batches,

capacity and piece counting may become more important.

Choosing a Scale for Watch Springs

Tiny springs can benefit from:

milligram readability.

Use:

a tray

and minimize:

airflow.

Choosing a Scale for Watch Hands

Watch hands are lightweight.

For individual comparison:

0.001g may provide useful displayed detail.

Choosing a Scale for Watch Gears

Tiny gears can be:

very lightweight.

Use:

0.001g

when fine weight comparison is required.

For larger gears:

0.01g may be sufficient.

Choosing a Scale for Watch Jewels

Individual watch jewels may require:

very fine readability.

However:

weight alone cannot identify:

the material or correct application.

Choosing a Scale for Crowns

Crowns are generally heavier than:

tiny movement screws.

Depending on your purpose:

0.01g may provide sufficient detail.

Choosing a Scale for Movements

For complete movements:

0.01g is generally more practical.

Prioritize:

Capacity
Platform size
Stability
Tare

Choosing a Scale for Cases

Cases require:

more capacity.

500g × 0.01g

scale can accommodate many watch cases while maintaining:

fine displayed increments.

Choosing a Scale for Bracelets

Metal bracelets can become:

relatively heavy.

Do not sacrifice:

capacity

for:

unnecessary milligram readability.

Choosing a Scale for Complete Watches

For complete watches:

500g × 0.01g

is a strong starting specification.

Ensure:

the watch sits securely

and:

nothing touches the surrounding table.

Choosing a Scale for Watch Parts Inventory

For inventory:

consider what matters most:

individual component comparison

or:

batch weighing.

For individual tiny components:

0.001g may help.

For batches:

higher capacity can be more useful.

Choosing a Scale for a Watch Repair Shop

A repair shop handles:

a broad component range.

A practical setup may be:

500g × 0.01g general-purpose scale

plus:

50–100g × 0.001g milligram scale.

Choosing a Scale for Watch Collectors

Collectors often weigh:

complete watches.

Prioritize:

500g capacity
0.01g readability
Suitable platform
Calibration
Portability

Choosing a Scale for Watch Parts Sellers

Parts sellers may need:

Fine component measurement
Batch weighing
Piece counting
Inventory documentation

Depending on volume:

a two-scale setup may be useful.

Do Not Use Weight Alone to Authenticate Watch Parts

A scale measures:

mass.

It cannot independently establish:

Manufacturer
Model
Reference
Authenticity
Material composition

A component matching an expected weight is not automatically:

genuine.

Do Not Authenticate Complete Watches by Weight Alone

Watch weight can be:

one comparison point.

But counterfeit or modified watches can:

approximate expected weights.

Authentication may require:

Reference-specific dimensions
Movement inspection
Serial/reference information
Material analysis
Dial and case inspection
Expert evaluation

Do Not Determine Material From Weight Alone

Suppose a watch case weighs:

85g.

That alone cannot prove it is:

Steel
Gold
Platinum
Titanium
Another alloy

Mass without:

volume and additional material information

cannot independently determine composition.

Do Not Determine Watch Value From Weight

Watch value can depend on:

Brand
Reference
Rarity
Condition
Provenance
Originality
Materials
Market demand

Weight is:

one measurement,

not:

a valuation system.

Common Mistakes When Choosing a Scale for Watch Parts

Buying Based Only on Decimal Places

More digits are not automatically:

better.

Confusing Readability With Accuracy

0.001g readability does not automatically guarantee:

±0.001g accuracy.

Ignoring Capacity

Always calculate:

complete physical load.

Forgetting the Tray

The tray counts toward:

capacity.

Assuming Tare Restores Capacity

It does not.

Buying Exactly Enough Capacity

Leave:

headroom.

Ignoring Minimum Usable Load

The lower measurement range matters.

Ignoring Repeatability

Stable measurements matter more than:

decorative decimal places.

Ignoring Platform Size

A complete watch needs:

physical room.

Allowing the Watch to Touch the Table

The full weight must be:

supported by the scale.

Using the Wrong Calibration Weight

Follow:

the manufacturer's procedure.

Calibrating With Coins

Use:

appropriate calibration masses.

Confusing Calibration With Tare

They are:

different functions.

Putting the Scale on a Soft Surface

Use:

a rigid, stable bench.

Ignoring Vibration

Precision measurements can be affected.

Ignoring Airflow

This is especially important for:

0.001g work.

Ignoring Static

Tiny components can be sensitive to:

static effects.

Buying One Scale for an Extreme Range

Two scales may provide:

a better solution.

Using Weight as Authentication

Weight alone cannot prove:

authenticity.

Watch Parts Scale Buying Checklist

Before purchasing, ask:

What watch parts will I weigh?
What is my lightest component?
What is my heaviest component?
Will I weigh complete movements?
Will I weigh cases?
Will I weigh bracelets?
Will I weigh complete watches?
Will I weigh batches?
Do I need 0.001g?
Would 0.01g be sufficient?
What is maximum capacity?
What is minimum usable load?
What does my tray weigh?
What is the heaviest complete physical load?
Have I left capacity headroom?
What is the platform size?
Will a complete watch fit?
Will a bracelet fit without touching the table?
Does the scale have tare?
Are weighing trays included?
Do I need tweezers?
What calibration weight is required?
Is it included?
What is the calibration procedure?
What accuracy specifications are available?
What repeatability specifications are available?
Is my workbench rigid?
Is vibration present?
Is there direct airflow?
Could static affect tiny parts?
Would a draft shield help?
Is the environment temperature-stable?
Do I need piece counting?
Are the components consistent enough for piece counting?
Do I need multiple weighing units?
Do I need battery power?
Do I need AC power?
Do I need portability?
Do I need a protective cover?
Will I use the scale for inventory?
Will I use it for documentation?
Would one scale cover my complete range?
Would two scales be more practical?
Am I incorrectly treating readability as accuracy?
Am I incorrectly using weight as authentication?

Frequently Asked Questions

What scale should I use for watch parts?

For general watch parts:

500g × 0.01g

is a strong starting specification.

For extremely lightweight individual components:

consider:

0.001g readability.

Is 0.01g good for watch parts?

Yes, for many:

Crowns
Movements
Cases
Bracelets
Complete watches
Component batches

Do I need 0.001g for watch repair?

Not for every task.

It is most useful when weighing:

extremely lightweight components

where milligram-level displayed increments matter.

Is 0.001g more accurate than 0.01g?

Not automatically.

It provides:

finer readability.

Accuracy depends on:

the scale's specifications and operating conditions.

What does 500g × 0.01g mean?

It means:

500g maximum capacity

and:

0.01g readability.

Is 500g enough for a watch scale?

For many:

complete watches, cases, bracelets and movements,

yes.

But calculate:

your actual maximum load.

Does a tray count toward capacity?

Yes.

Everything physically supported by the weighing mechanism counts toward:

the load.

Does tare remove the tray from capacity?

No.

Tare only changes:

the displayed reference.

What scale should I use for watch screws?

For extremely lightweight individual screws:

0.001g milligram scale

may be appropriate.

What scale should I use for complete watches?

500g × 0.01g

scale is a practical starting point.

What scale should I use for watch movements?

For complete movements:

0.01g readability with:

100–500g capacity

is often practical.

What scale should I use for bracelets?

Prioritize:

capacity and platform size.

500g × 0.01g

scale can be useful for many watch bracelets.

Is the SC501g good for watch parts?

For general watchmaking:

it provides a useful combination of:

500g capacity, 0.01g readability, a 3.9 × 3.7-inch platform, tare and expansion trays.

What scale should I use for tiny movement parts?

Consider:

20–100g × 0.001g

when milligram-level readability is genuinely needed.

Is the GEMINI-50 suitable for watch parts?

For tiny components:

it provides:

50g × 0.001g

and includes accessories useful for fine weighing.

Should I buy the GEMINI-20 or GEMINI-50?

Both provide:

0.001g readability.

The:

GEMINI-50

provides more capacity.

How should I calibrate a watch scale?

Follow:

the manufacturer's procedure

using:

the specified calibration mass.

Can I calibrate a scale with a coin?

Do not substitute:

random coins or household objects

for appropriate calibration masses.

Can I weigh a watch on a tray?

Yes.

Use:

tare

to subtract the tray from the displayed result.

Remember:

the tray still contributes to physical capacity.

Can a digital scale authenticate a watch?

No.

Weight can be one reference measurement but cannot independently prove:

authenticity.

Can a scale tell me whether a watch is gold?

No.

Mass alone cannot independently establish:

material composition.

Should a watchmaker own two scales?

If the workflow ranges from:

tiny screws

to:

complete watches,

a two-scale setup can provide much better coverage.

Final Verdict: How to Choose a Scale for Watch Parts

Choosing the right scale for watch parts begins with:

your actual working range.

First determine:

the lightest component you genuinely need to measure.

Then determine:

the heaviest complete physical load.

Remember to include:

part + tray + container.

Next choose:

readability.

For tiny:

Screws
Springs
Hands
Pins
Gears
Jewels
Movement components

consider:

0.001g readability

when milligram-level displayed increments are genuinely useful.

For broader watchmaking involving:

Crowns
Complete movements
Cases
Bracelets
Complete watches
Component batches

0.01g readability

provides a more practical balance with higher capacity.

For many general watchmaking applications:

500g × 0.01g

is an excellent starting configuration.

The AWS SC501g provides this combination along with:

3.9 × 3.7-inch platform
Stainless-steel weighing surface
Tare
Expansion trays
Multiple units
Battery operation

For finer work:

a 50–100g × 0.001g milligram scale

can supplement the general-purpose scale.

Before purchasing, evaluate:

readability → capacity → minimum usable load → repeatability → platform size → tray weight → tare → calibration → environmental stability → accessories.

Do not choose based on:

decimal places alone.

Do not assume:

tare restores capacity.

Do not confuse:

readability with accuracy.

Do not calibrate using:

random household objects.

And do not use:

weight alone to authenticate or value a watch.

For watchmakers whose work spans extremely tiny movement components through complete watches, the most flexible solution is often:

one 0.001g milligram scale for tiny components + one 500g × 0.01g precision scale for general watchmaking.

Choose the scale—or combination of scales—that matches:

what you actually weigh.