M00001152
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ISO 9960-1:1992 Draughting instruments with or without graduation -- Part 1: Draughting scale rules
standard by International Organization for Standardization, 07/01/1992
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Availability date: 2021-11-25
Specifies the main requirements and the accuracy of draughting scale rules, and their graduations in SI units. Two types of draughting scale rules are covered: those for hand use and those for manually operated draughting machines, both for professional use only. Scale rules for use in schools are not included.