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BS 870:1950

BS 870:1950

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Specification for external micrometers

Available format(s)

Hardcopy , PDF

Superseded date

11-30-2008

Language(s)

English

Published date

06-09-1950

Publisher

British Standards Institution

Cooperating organizations
Foreword
Specification
Section one. General
1. Scope
2. Nomenclature
Section two. Micrometers
3. Material
4. General design of frame
5. Micrometer screw
6. Spindle
7. Thimble and barrel
8. Adjustments
9. Measuring faces
10. Accuracy
11. Zero setting
12. Case
13. Packing
14. Marking
Section three: Setting gauges
15. Material
16. General design
17. Accuracy
18. Packing
19. Marking
Appendices
A. Recommended methods of testing micrometers
B. Information to be supplied by the purchaser with
     his enquiry
C. Testing of micrometers

External micrometers with fixed anvils having measuring ranges of 0 to ½ in and 0 to 13 mm, and 1 in and 25 mm up to maximum sizes of 24 in and 600 mm respectively. Includes external micrometer with interchangeable anvils for alternative measurement ranges. Material, design of frame, micrometer screw, spindle, thimble and barrel, adjustments, measuring faces, accuracy, packing and marking; setting gauges (material, general design, accuracy); test methods appended.

Committee
TPR/1
DocumentType
Standard
Pages
20
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

Standards Relationship
AS B75-1952 Identical

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08/30177718 DC : DRAFT JUNE 2008 BS 6468 - SPECIFICATION FOR DEPTH MICROMETERS
BS 1685:1951 Specification for bevel protractors (mechanical and optical)
BS 959:1950 Specification for internal micrometers (including stick micrometers)
BS 2572:1990 Specification for phenolic laminated sheet and epoxy cotton fabric laminated sheet
BS 7531:1992 Specification for compressed non-asbestos fibre jointing
BS 7531:2006 Rubber bonded fibre jointing for industrial and aerospace purposes. Specification
BS 1912:1990 Specification for soap flakes
BS 2782-3:Method 327A:1993 Methods of testing plastics. Mechanical properties Determination of tensile strength and elongation at break of polytetrafluoroethylene (PTFE) products
BS 6468:1984 Specification for depth micrometers
BS 6468:2008 Specification for depth micrometers
08/30177716 DC : DRAFT JUNE 2008 BS 959 - SPECIFICATION FOR INTERNAL MICROMETERS (INCLUDING STICK MICROMETERS)
BS 7663:1993 Methods of test for determination of permittivity and dissipation factor of electrical insulating material in sheet or tubular form
BS 7825-2:1996 Calibration of rubber and plastics test equipment Calibration procedures
BS 419:1966 Specification for varnished fabrics and tapes for electrical purposes
06/30144329 DC : DRAFT MAR 2006 BS 7531 - RUBBER BONDED FIBRE JOINTING FOR INDUSTRIAL AND AEROSPACE PURPOSES - SPECIFICATION
BS 5214-2:1978 Specification for testing machines for rubbers and plastics Constant rate of force application machines
BS 852:1939 Specification for toolmakers\' straightedges
BS F 125:1973 Specification for rubber bonded compressed asbestos fibre jointing
BS 957-1:1941 Specification for feeler gauges Inch units
BS 1734:1951 Specification for micrometer heads

BS 1790:1961 Specification for length bars and their accessories (imperial units)
BS 959:1950 Specification for internal micrometers (including stick micrometers)
BS 1685:1951 Specification for bevel protractors (mechanical and optical)
BS 957-2:1969 Specification for feeler gauges Metric units
BS 888:1950 Specification for slip (or block) gauges and their accessories
BS 957-1:1941 Specification for feeler gauges Inch units
BS 907:1965 Specification for dial gauges for linear measurement
BS 1054:1954 Engineers comparators for external measurement
BS 906-2:1972 Specification for engineers\' parallels. Imperial units
BS 818(1963) : LATEST CAST IRON STRAIGHT EDGES (BOW SHAPED AND I-SECTION)
BS 939:1962 Specification for engineers\' squares (including cylindrical and block squares)
BS 817(1939) : LATEST
BS 906-1:1972 Specification for engineers\' parallels Metric units
BS 2795:1957 Dial test indicators (lever type) for linear measurement. Metric units.
BS 852:1939 Specification for toolmakers\' straightedges
BS 1643:1950 Specification for precision vernier height gauges
BS 869:1939 Toolmakers\' flats and high precision surface plates.
BS 863(1939) : LATEST STEEL STRAIGHTEDGES OF RECTANGULAR SECTION
BS 958:1941 Precision levels for engineering workshops

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Hardcopy - English
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