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.

Spectroscope
BLEEKER
1946-1950

Achromatic magnifier 8×
BLEEKER
1940-1955

Achromatic stand magnifier
LEITZ
1925-1950

Butter refractometer after Wolney
ZEISS
ca. 1891