Gold Balance JET303G/00 - Overview - METTLER TOLEDO

Gold Balance JET303G/00

Smart Features.Accurate and reliable, for trusted jewelry weighing. 320 g capacity, 0.001 g readability, 4.5'' color touchscreen, FACT fully automatic internal adjustment, 3 interfaces, 8 built-in applications, overload protection, metal base

Designed to Perform

Advanced weighing technologies, solid construction, and special design features deliver the accuracy you need for weighing jewelry and precious metals.

Intuitive Touch Screen Operation

The large color touchscreen is easy to read, even under the dazzling glare of shop lights, while the user interface is simple for anyone to use.

Automatic Performance Testing

JET balances use internal weights to automatically test and adjust the balance, helping to ensure that weighing performance remains true.

Material No.: 30525035

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Specifications - Gold Balance JET303G/00
Maximum Capacity
320 g
0.001 g
Repeatability, limit
1 mg
Minimum Weight (U=1%, k=2), typical
140 mg
Internal / FACT
Weighing Pan Diameter
120 mm
Legal for Trade
Repeatability, typical
0.7 mg
Settling Time
1.5 s
Dimensions (HxWxD)
289 mm x 210 mm x 319 mm
Die-cast aluminum, ABS
USB Device
USB Host
Balance Model (Carat/Gold)
4.5" color TFT touchscreen
Product Line
Material Number(s)

Easy Device Connection

Connect a barcode reader, printer, Bluetooth adapter, or even a PC for easy upload and transfer of your weighing data. Conveniently, you can even run a printer and auxiliary display at the same time - just plug them in and you're ready to go.

Built to Last

You can be assured of a long balance lifetime thanks to the robust, high-quality construction and overload protection.

View 2 Weight Units at the Same Time

JET balances have a unique feature that enables you to show a primary and secondary weight unit simultaneously. For instance, show the weight in both carats and grams. 16 units are available to choose from.

Guided Applications

Built-in applications, including density and totalization, simplify your daily jewelry weighing tasks. Instructions are provided on the touchscreen display and results are calculated automatically.

Simple Density Determination

Convert your balance for density determination by installing a density kit in just a few simple steps. The built-in density application provides step-by-step instructions and takes care of all calculations to help you accurately establish the purity of gold.

Weigh Big Items Easily

The generous weighing pan offers ample space for big items and containers while the hook on the base is perfect for both weighing and determining the density of larger items below the balance.

Legal for Trade

All JET balances are available as Legal for Trade versions suitable for most countries. Please contact us for more details.



User Manual: Jewelry Balances JET
Easy reference guide to help you quickly set-up and start using your balance.


Datasheet : JET Gold and Carat Balances
Download this datasheet to learn more about specifications and accessories of JET Gold and Carat Balances.

Technical Specifications

Jewelry Density Table
Jewelry Density Table (pdf - 102 KB)
Density Table for precious metals for jewelry and metals used as alloys



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Instrument protection

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Gold Balance JET303G/00