Arlt Loop
Lens Loop, serrated
Active filters
Lens Loop, serrated
Caliper, 20 mm, straight, 0.5 mm graduation
Caliper, 20 mm, curved
Caliper, 20 mm straight
Caliper, 15 mm
Lens Spoon, fig. 2
Lens Spoon, fig. 1
Giessen ruler
Lens Spoon
Caliper, 80 mm
Lens Loop, round handle