BS 939:2007
Current
The latest, up-to-date edition.
Engineers\' squares (including cylindrical and block squares). Specification
Hardcopy , PDF
English
31-10-2007
Foreword
Section 1: General
1 Scope
2 Normative references
3 Terms and definitions
4 Protection against climatic conditions
Section 2: Engineers' try squares
5 Designating size
6 Recommended sizes
7 Material and manufacture
8 General features of design
9 Finish
10 Accuracy
11 Rigidity
12 Marking
Section 3: Cylindrical squares
13 Designating size
14 Recommended sizes and dimensions
15 Material and manufacture
16 General features of design
17 Finish
18 Accuracy
19 Marking
Section 4: Solid form block squares
20 Designating size
21 Recommended sizes and dimensions
22 Material and manufacture
23 General features of design
24 Finish
25 Accuracy
26 Marking
Section 5: Open form block squares
27 Designating size
28 Recommended sizes and dimensions
29 Material
30 General features of design
31 Finish
32 Accuracy
33 Marking
Annexes
Annex A (informative) Notes regarding bevelled edges on blades
of grade AA engineers' try squares
Annex B (informative) Notes on the manufacture and testing of
squares
Bibliography
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