-40%
1950s- Mid-60s AO American Optical Filar Micrometer Ocular Catalog Number 425 +
$ 68.64
- Description
- Size Guide
Description
AO American Optical/Spencer Filar Micrometer Ocular Catalog Number 425 + Tag ExcellentCondition:Used; 1950's- mid-1960's
Description: used, as pictured in box, excellent condition
Filar stands for "thread". These devices were used to measure the size of microscopic objects and the position inside the entire object. This was an important accessory for biologists.
Use in the science classroom, home school, lab, hobby