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  • BSI
    BS 817:2008 Specification for surface plates
    Edition: 2008
    $313.97
    / user per year

Description of BS 817:2008 2008

This British Standard specifies the construction, and dimensions and tolerances, for rectangular and square surface plates for use as working planes for engineering purposes, made of cast iron or granite, in two size ranges, from 160 mm × 100 mm to 2 500 mm ×1 600 mm and from 12 in × 12 in to 96 in× 48 in, and in four grades of accuracy.

The standard is applicable to new surface plates and to plates that are being resurfaced after they have become worn.

In addition to the definitive requirements, this standard also requires the items detailed in Clause 4 to be documented. For compliance with this standard, both the definitive requirements and the documented items have to be met.

NOTE 1 The inch sizes are given as this information is still required by industry. Attention is drawn to the fact that metric dimensions are not necessarily direct conversions of the imperial dimensions.

NOTE 2 General information on the care and use of surface plates is given in Annex A.



Standard NumberBS 817:2008
TitleSpecification for surface plates
StatusConfirmed
Publication Date2008-11-30
ReplacesBS 817:1988
DescriptorsTest equipment, Cast-iron, Grading (quality), Flatness (surface), Tolerances (measurement), Finishes, Rigidity, Storage, Dimensions, Rectangular shape, Surface plates, Marking, Accuracy, Square shape, Datum, Granite, Testing conditions, Design, Supports
ICS17.040.30 Measuring instruments
CommitteeTPR/1
ISBN978 0 580 62030 0
PublisherBSI
Pages22

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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