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JB/T 9341.3-1999 in English
Metrology grating technology -- Technical requiremnts for grating bar of galss
valid
Issued on:1999-08-06
$240.00 -
JB/T 9341.4-1999 in English
Metrology grating technology -- Technical requiremnts for grating disk of glass
valid
Issued on:1999-08-06
$240.00 -
JB/T 9342-1999 in English
Gauge hat for optical metrical instrument
valid
Issued on:1999-08-06
$280.00