![Re-engineered "the gem" mechanical pencil sharpener from 1886, plastic prototype photos : r/MechanicalEngineering Re-engineered "the gem" mechanical pencil sharpener from 1886, plastic prototype photos : r/MechanicalEngineering](https://i.redd.it/re-engineered-the-gem-mechanical-pencil-sharpener-from-1886-v0-dghmn3vr79ya1.jpg?width=2592&format=pjpg&auto=webp&s=c90f6c36b81ddac93ce66971ebe6e9abee9eb513)
Re-engineered "the gem" mechanical pencil sharpener from 1886, plastic prototype photos : r/MechanicalEngineering
![Re-engineered "the gem" mechanical pencil sharpener from 1886, plastic prototype photos : r/MechanicalEngineering Re-engineered "the gem" mechanical pencil sharpener from 1886, plastic prototype photos : r/MechanicalEngineering](https://i.redd.it/re-engineered-the-gem-mechanical-pencil-sharpener-from-1886-v0-8p7hj1vr79ya1.jpg?width=2592&format=pjpg&auto=webp&s=446d406ba5eea18c733aa63570fae47e66bceb49)
Re-engineered "the gem" mechanical pencil sharpener from 1886, plastic prototype photos : r/MechanicalEngineering
![Image of PENCIL SHARPENER AD, 1890. - American Magazine Advertisement, 1890, For The Gem Pencil Sharpener. From Granger - Historical Picture Archive Image of PENCIL SHARPENER AD, 1890. - American Magazine Advertisement, 1890, For The Gem Pencil Sharpener. From Granger - Historical Picture Archive](https://www.granger.com/wmpix/lan/han/0097729-PENCIL-SHARPENER-AD-1890-American-magazine-advertisement-1890-for-the-Gem-pencil-sharpener.jpg)
Image of PENCIL SHARPENER AD, 1890. - American Magazine Advertisement, 1890, For The Gem Pencil Sharpener. From Granger - Historical Picture Archive
![Re-engineered "the gem" mechanical pencil sharpener from 1886, plastic prototype photos : r/MechanicalEngineering Re-engineered "the gem" mechanical pencil sharpener from 1886, plastic prototype photos : r/MechanicalEngineering](https://i.redd.it/re-engineered-the-gem-mechanical-pencil-sharpener-from-1886-v0-s1d0i3vr79ya1.jpg?width=2592&format=pjpg&auto=webp&s=0759bb644aacbd8fabe1d42c8b18f525c1fc150c)