All Hexagonal Weights are calibrated here at JWS to the specification listed below:
M1 is the most accurate at +/-25mg.
M3 is +/-250mg
If you want the test weight independently verified select 'Trading Standards Stamped'. Remember to add a Trading Standards Certificate to your basket available back on the Hexagonal Weights page where you can also purchase a UKAS Certificate and JWS Certificate of Conformity.
These weights can have stencilled or stamped serial numbers put on them. Contact us for more details.
Only one Certificate is needed per batch of weights on the same order.
Verified by Trading Standards?