2070140

AS B139-1955 [ Withdrawn ]

Bevel protractors (mechanical and optical)

standard by Standards Australia , 01/01/1955

📝 Amendments Available

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About This Item

 

Full Description

Relates to three mechanical types of bevel protractors, in which the measurement is read direct from the scale either with or without the assistance of a vernier, and for one optical type in which the measurement is read on an internal circular scale by means of an optical magnifying system integral with the instrument. Requirements for accuracy in respect of the body, stock and blade, and of the accurate angle attachment, where fitted, are given and graduations for both types of protractors are specified. Illustrations of the nomenclature adopted and clauses relating to material, workmanship, and marking are included.
 

Product Details

Edition:
1st
Published:
01/01/1955
Number of Pages:
6
File Size:
1 file , 59 KB
Product Code(s):
10171588, 10171595, 10171574
Note:
This product is unavailable in Ukraine, Russia, Belarus
 

Amendments, rulings, supplements, and errata

  1. AS B139-1955 AMDT 1

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    Bevel protractors (mechanical and optical)