Year/Period |
ca. 1950 |
Maker |
OLDELFT |
Country |
The Netherlands |
Signature |
OLD DELFT |
Category |
Other optical equipment |
Subcategory |
Magnifying glasses |
Size of the instrument (h x w x d) |
Length 20 × ø 7 cm |
Donated by |
R.F. Mastenbroek, Leiden, The Netherlands |
Inventory number |
SM 507 |
In aluminum frame with handle.
On the 13 cm long handle of the magnifying glass is engraved OLD DELFT.
The focal length is approx. 13 cm.
Porro prism binocular 7×50
BLEEKER
ca. 1953
Thread counter
BLEEKER
1955-1965
Thread counter
BLEEKER
1955-1965
Achromatic magnifier 12× and 10×
BLEEKER
1940-1947