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Označení normy: | BS 852:1939 |
Počet stran: | 10 |
Vydáno: | 1939-06-19 |
ISBN: | 0 580 35248 X |
Status: | Standard |
DESCRIPTION
BS 852:1939
This standard BS 852:1939 Specification for toolmakers' straightedges is classified in these ICS categories:
- 17.040.30 Measuring instruments
This Specification applies to toolmakers’ straightedges of short length intended for very accurate work, and having one working edge, which is bevelled and very slightly rounded off (commonly described as a “knife-edge”).
NOTE The attention of the purchaser is drawn to the necessity for indicating, in his enquiry and order, his particular requirements in regard to type and length, and whether a test plate (see Clause 6) is required.
Straightedges of short length for very accurate work, having one working edge which is bevelled and very slightly rounded off ('knife-edge'). Material, general features, finish, accuracy, handles, glass test plate, case, packing, marking.