Cromwell 878M | 6.5mm Micrometer Ball Attachment (PR)
Brand : Cromwell
Part Number : 878M
Stock Status :
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To suit the 1961, 1965 and 1966 series micrometers. Can be fitted to the
anvil or spindle on external micrometers to enable round or irregular
surfaces to be measured. The ball is hardened and moves freely to allow
contact with the object being measured.
Note: Always deduct the ball diameter from every reading.