Metal or plastic, single of fold-out - they have holes, you match the diamond against the hole of the nearest size. |
Optical (micro-film with a scale, mounted on a powerful magnifier); calliper (mechanical); calliper (digital). |
Call us on
01923 22020601923 220206
QUICKTEST
PARK HOUSE
GREENHILL CRESCENT
WATFORD BUSINESS PARK
WATFORD
WD18 8PH
United Kingdom
© 2016 - 2021 QUICKTEST