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  • BS 939:1977

BS 939:1977

Specification for engineers' squares (including cylindrical and block squares)

BSI Group, 09/30/1977

Publisher: BS

File Format: PDF

$36.00$73.66


Published:30/09/1977

Pages:16

File Size:1 file , 570 KB

Note:This product is unavailable in Ukraine, Russia, Belarus

Squares of try-square type in three grades of accuracy: AA, A, B; cylindrical squares in grade AA; solid form block squares in grades AA, A; open form block squares in grades A, B. Nomenclature, designation, sizes, material, manufacture, design, accuracy, marking, protection, testing.

Cross References:
BS 1133:Section 6
BS 1133:Section 19
BS 1134
BS 1452
BS 3643


Replaces BS 939:1962.

Incorporates the following:
AMD 4239 published 29 April 1983

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