Year/Period |
1950-1960 |
Maker |
BLEEKER |
Country |
The Netherlands |
Signature |
(1): CURTIS . SYSTEMS // BLEEKER / HOLLAND // NOI [in logo] / No 45 / 67503 |
Category |
Other optical equipment |
Subcategory |
Refractometers |
Inventory number |
SM 79 |
For information on the color and number of the rings see refractometer color codes (in Dutch).
To see the inside of this instrument we refer to SM 168.
Folding hand magnifier
BLEEKER
1940-2017
Porro prism binocular 6×24
BLEEKER
ca. 1950
Achromatic magnifier 10×
BLEEKER
1950-1960
Universal refractometer after Abbe
BLEEKER
1950-1960