carlynorama:
Finished Viewer From op
carlynorama:
Slide Viewer Inside From SIde
carlynorama:
The tactswitch with operating hardware
carlynorama:
The notched wood
carlynorama:
SlideViewer1
carlynorama:
United States Patent US4207448 (1980)
carlynorama:
United States Patent US3133170 (1964)
carlynorama:
United States Patent US6080940 (1998)
carlynorama:
Omron BW3
carlynorama:
P1000133