Two flat plates of unannealed glass, one star shaped the other square, Ladd, London, c.1872
Details
- Category:
- Optics
- Object Number:
- 1872-37
- Materials:
- glass
- Measurements:
-
star: 11 mm x 39 mm x 32 mm,
square: 12 mm x 30 mm x 30.5 mm,
overall, weight: .055kg
- type:
- lens blank
- credit:
- Ladd, W.
