Optical tooling
517101 Diopter Tester
Model 517101
Used to check the range and establish the “zero” setting of focusing eyepieces for optical products.
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Specifications
Specifications
- 3x magnification
- 1 3/8” diameter
- 8” minimum focus
- Range of 9 diopters from +4 to -5
- Zero setting at infinity
- 13 mm aperture
- 3½” length
- 4¼ mm diameter of exit pupil