A Philips' optical power meter OPM 1A, c.1990.
Details
- Category:
- Telecommunications
- Object Number:
- Y2005.68.5
- Materials:
- metal (unknown) and plastic (unidentified)
- Measurements:
-
overall: 57 mm x 91 mm x 184 mm,
- type:
- power meter
- credit:
- Gift of British Telecommunications plc
