Sketch of secondary holder for Cassegrain x 3 optic. For Martyn Richardson, Teddington. Size 130 x 200 mm.
Details
- Extent:
-
1 item
- Identifier:
- IRV/D/3/16
- Access:
- Open Access
- copyright:
Sketch of secondary holder for Cassegrain x 3 optic. For Martyn Richardson, Teddington. Size 130 x 200 mm.