• BS 90:1975

BS 90:1975

Specification for direct-acting electrical recording instruments and their accessories

BSI Group , 02/28/1975

Publisher: BS

File Format: PDF

$175.00$350.52


Defines and classifies accuracy classes, methods of determining intrinsic error and variations for measured quantity and time-keeping, lists influence quantities, electrical and mechanical requirements, marking requirements and symbols. Concept used and effect of friction between marking device and chart explained in appendices.Cross References:BS 1991:Part 6BS 2011BS 3939BS 4727:Part 1:Group 04BS 5164

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