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.

Achromatic magnifier 12×
BLEEKER
1940-1950

Magnifier
OLDELFT
ca. 1950

Polarimeter after Laurent
WINKEL
1928-1940

Trial lens kit
ONBEKEND/UNKNOWN
ca. 1900