Year/Period |
1920-1950 |
Maker |
ONBEKEND/UNKNOWN |
Country |
Unkown |
Signature |
Unsigned |
Category |
Other optical equipment |
Subcategory |
Magnifying glasses |
Size of the instrument (h x w x d) |
3 × 5 × 2 cm (folded); ø lens 3 cm; ø diaphragm 3 cm |
Donated by |
R. Ketting, Vlaardingen, The Netherlands |
Inventory number |
SM 510 |
Wooden folding pocket magnifier with two lenses and a diaphragm.
The magnifying glass has been donated to the foundation by Mr. R. Ketting and comes from the legacy of his family from father’s side.
Telescope
ONBEKEND/UNKNOWN
1900-1930
Achromatic magnifier 12×
BLEEKER
1940-1950
Porro prism binocular 6×24
BLEEKER
ca. 1950
Trial lens kit
ONBEKEND/UNKNOWN
ca. 1900