Plastic pencil sharpener, German, DUX
BCN gramophone needle sharpener.
Rockit blade sharpener, 1909
1909
IM "Pointmaster" fibre needle sharpener.
Davey Rollright Thorn needle sharpener
"Gem" knife sharpener, c.1928
Knife cleaner and sharpener, by Spong, c.1900
1900
"The Spiro" Safety Blade Sharpener - From Microbiology Lab
Razor blade sharpener
Drill sharpening machine
1950