IS 7011 : 1973 Specification for Back-silvered Mirrors Used in Instrument Industry
UDC 535.87 : 631.2 | PGD 22 |
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Reaffirmed 2021 |
1 Scope
1.1 This standard specifies the requirements of back-silveredmirrors intended:
a) for use in air-tight instruments, and
b) for general use where the mirror is exposed to theatmosphere.
2 Reference
IS 2 : 1960 Rules forrounding off numerical values