Buy a calibration weight by the scale’s documented requirements, not by choosing a convenient round number. The mass must match the procedure, and the weight’s quality must be appropriate for the measurement you need.
Start with the required mass
The AWS 100WGT linked below is a 100 g weight. It belongs on your shortlist only if the instrument and intended check call for that mass.
It is unsuitable for placing on a 20 g-capacity GEMINI-20 because it exceeds the scale’s maximum load. The fact that both products carry the AWS name does not make them a compatible calibration pair.
The Weigh Gram package lists a supplied 100 g weight, but confirm the model’s instructions before substituting any replacement.
Check the instrument revision
Manufacturer documentation can differ across versions. AWS’s current GEMINI-20 product page lists a 20 g calibration weight, while an available manual describes a 10 g routine.
Use the instructions that match the unit, and resolve any conflict with the manufacturer or seller. Do not choose a reference by guessing which document is newer or by forcing an unfamiliar display prompt.
Ask about tolerance and documentation
The number stamped on a weight states its nominal mass. It does not explain the permitted deviation, measurement uncertainty or traceability.
For demanding work, ask what tolerance or class is documented and whether a relevant certificate is supplied. A generic “calibration weight” label does not by itself establish suitability for a fine measurement.
Also distinguish a calibration certificate from a decorative certificate of authenticity or a seller’s general quality statement.
Protect the reference
Keep weights clean, dry and stored in a protective case. Avoid scraping them against tools or using them as convenient paperweights. Changes to the reference can undermine subsequent checks.
A second suitable mass can help check performance beyond the adjustment point, but it must remain within the scale’s capacity.
Our recommendation
Begin with the exact manual, then buy the matching mass with documentation appropriate to the task. The AWS 100WGT is a relevant option for a verified 100 g requirement; it is not a universal accessory.
If your work needs confidence beyond ordinary collecting checks, ask the scale maker or a calibration provider to specify the reference. That is more useful than buying an assortment of unverified weights.
Explore the relevant products
- American Weigh Scales 100WGT 100g Calibration Weight
- Weigh Gram 200g × 0.01g Digital Pocket Scale with 100g Weight
- American Weigh Scales GEMINI-20 20g × 0.001g Milligram Scale
Check the exact model, seller, package contents and current offer on the linked product page before ordering.
Sources and further reading
Explore more Gold Kings buying guides.
As an Amazon Associate I earn from qualifying purchases. The product pages linked in this article contain Amazon affiliate links. This guide is based on published specifications and practical buying considerations, not a controlled hands-on product test.