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Licenseflat plane Thorp gratings, 5
Science Museum Group
© The Board of Trustees of the Science Museum
flat plane Thorp gratings, 5.5 cm x 8 cm, 14,438 lines per inch, one of two, prepared by T. Thorp himself in 1902.
Details
- Category:
- Optics
- Object Number:
- 1935-152/1
- Materials:
- glass and celluloid (cellulose)
- Measurements:
-
overall: 100 mm x 75 mm x 4 mm, , .07kg
- type:
- plane - tool
- credit:
- Mr. C.W. Gamble.
