BS 1685:2008 - Bevel protractors (mechanical and optical). Requirements and test methods – BSI British Standards

BS 1685:2008

Bevel protractors (mechanical and optical). Requirements and test methods

Status : Confirmed, Current   Published : November 2008

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BS 1685:2008 Bevel protractors (mechanical and optical). Requirements and test methods

BS 1685:2008 relates to the following types of bevel protractors:

a) Mechanical

  • Type A. With vernier graduated to read to five minutes of arc, and with slow motion device, and acute angle attachment
  • Type B. With vernier graduated to read to five minutes of arc, but without slow motion device or acute angle attachment
  • Type C. With scale graduated in degrees, without vernier or slow motion device or acute angle attachment

b) Optical

  • With an internal circular scale which is graduated in divisions of 10 minutes of arc and read against a fixed index line or vernier by means of an optical magnifying system integral with the instrument, enabling readings to be taken, by estimation or otherwise, to approximately two minutes of arc.

This new edition has been fully revised to bring it up to date.

BS 1685 contains specifications for:

  • Material 
  • General design and workmanship
  • Body
  • Stock 
  • Blade 
  • Acute angle attachment 
  • Graduations 
  • Marking 
  • Case

BS 1685:2008 supersedes BS 1685:1951, which is withdrawn.




Standard NumberBS 1685:2008
TitleBevel protractors (mechanical and optical). Requirements and test methods
StatusConfirmed, Current
Publication Date30 November 2008
Confirm Date01 May 2018
Normative References(Required to achieve compliance to this standard)BS EN 2540, BS EN ISO 18265,

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