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Year/Period
1955-1965
Maker
Country
The Netherlands
Signature
Unsigned
Category
Other optical equipment
Subcategory
Thread counters
Donated by
P.P. de Bruijn, Zeist, the Netherlands
Inventory number
SM 146
See also SM 217.
Folding hand magnifier
BLEEKER
1940-2017
Thread counter
Polarimeter tubes
1900-1950
Universal refractometer after Abbe
1950-1955