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.
Thread counter
BLEEKER
1955-1965
Porro prism binocular 6×30
BLEEKER
ca. 1950
Porro prism binocular 6×24
BLEEKER
ca. 1950
Cytometer
BLEEKER
1940-1960