Inspection Grade 1

Manufactured to ISO3650 (DIN861) from high quality alloy steel

Each block is heat treated for high wear resistance

Surface hardness >63HRC

Flat mirror surface finish for high dimensional stability and excellent wringing qualities.

Suitable for calibrating micrometers & calipers
The individual Gauge Block sizes in the set have been selected to check the accuracy of the micrometer spindle and measuring faces at 5 different rotational positions ensuring accuracy of the screw and parallelism of the contact faces BS870
Supplied complete in fitted wooden box.

All sets are in stock, when ordered each set is sent to the UKAS Laboratory for the certificate to be address to your company, normal lead time is 10 days.

Supplied with a UKAS Calibration Certificate