M1 test weight sets, machined from either brass or stainless steel.
The milligram weights in these sets are made from aluminium (up to 5mg) and German silver (up to 500 mg).

The M1 test weight sets are supplied in an appropriately sized, lined plastic carry case. The milligram weights are contained within their own plastic removable box with tweezers. 

M1 test weight sets are available with an optional calibration certificate.

Please see photos for set composition.