All Hexagonal Weights are calibrated here at JWS to the specification listed below:

M1 is the most accurate at +/-50mg.
M3 is +/-500mg

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 stenciled 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.

1kg Hex Test Weight M1, M2 or M3

Calibration Type
Verified by Trading Standards?

    James W Shenton Ltd

    Tinsley Street 

    Great Bridge 


    DY4 7LQ

    Tel:  0121 557 5124


    For further services and information go to:


    Trading Terms & Conditions with James W Shenton Ltd 


    Test Weights

    Traceable to National Standards. 


    Made in the

    West Midlands, UK.

    Certificated by Trading Standards




    Copyright James W Shenton Ltd