BS 870:1950 - Specification for external micrometers – BSI British Standards

BS 870:1950

Specification for external micrometers

Status : Revised, Superseded, Withdrawn   Published : June 1950 Replaced By : BS 870:2008

WITHDRAWN TITLE
*To ask about withdrawn titles contact the
Customer Relations
cservices@bsigroup.com, +44 345 086 9001


This British Standard specifies requirements for:

a) external micrometers having a frame holding a micrometer spindle and nut on one side opposite a fixed anvil on the other

b) external micrometers having a frame holding a micrometer and spindle and nut on one side opposite an anvil on the other, and providing for two or more alternative ranges of measurement effected by means of interchangeable or sliding anvils

c) setting gauges for micrometers.

This British Standard covers requirements for the frame material, general design of the frame, micrometer screw, spindle, thimble and barrel, zero settings, packing and marking of external micrometers.

This edition of the standard incorporates modifications of the 1939 edition to add provisions for micrometers with measuring ranges of 0 to ½ in. and from 12in. to 24in. (with their corresponding metric equivalents) and to include requirements relating to micrometers with interchangeable anvils and various measuring ranges up to 24in. (600 mm).




Standard NumberBS 870:1950
TitleSpecification for external micrometers
StatusRevised, Superseded, Withdrawn
Publication Date09 June 1950
Confirm Date15 August 1959
Withdrawn Date30 November 2008
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Replaced ByBS 870:2008
Amended ByPD 1281
PD 4562
AMD 358
DescriptorsMarking, Dimensional tolerances, External, Micrometers, Linear measurement, Flatness measurement, Calibration, Parallel, Mechanical testing, Dimensions, Graduations, Precision, Linear measuring instruments
ICS17.040.30
Title in FrenchMicrometres exterieurs. Specification
Title in GermanAussenmikrometer. Spezifikation
CommitteeTPR/1
ISBN0 580 39156 6
PublisherBSI
FormatA4
DeliveryNo
Pages20
File Size2.234 MB
Price£130.00


WITHDRAWN TITLE
*To ask about withdrawn titles contact the
Customer Relations
cservices@bsigroup.com, +44 345 086 9001
 Your basket
Your basket is empty

Multi-user access to over 3,500 medical device standards, regulations, expert commentaries and other documents


Worldwide Standards
We can source any standard from anywhere in the world


Develop a PAS

Develop a fast-track standardization document in 9-12 months


BSOL

The faster, easier way to work with standards