Pengasah potlot: Béda antara owahan
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Kaca anyar: thumbnail|right|upright=1.2|Pangasah prisma manual ngasilake kasil bentuk kipas dawa File:Apsco Vacuhold pencil sharpener 15.ogv|thumb|right|uprig... |
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Larik 7:
Pangembangan pengasah potlot diwiwiti ing Prancis, nalika ana buku Prancis wiwit taun 1822 nglaporake kanthi rinci babagan panemuane Pak C. A. Boucher (Paris) kanggo pangasah pensil. Dheweke makarya nganggo pantograf lan jebule butuh piranti kanggo pas ngasah potlot.<ref>{{Cite book|url=https://books.google.com/books?id=Vut7Bt4AjmIC&q=boucher+taille+crayon&pg=PA290|title=Recueil de la Société polytechnique: ou Recueil industriel, manufacturier, agricole et commercial, de la salubrité publique, ...|date=1822|publisher=Société polytechnique|pages=290–295|language=fr}}</ref><ref name="Grahl">{{Cite web|url=http://patent-infos.de/overview/history-pencil-sharpeners-1850.html|title=History of pencil sharpeners and pointers −1850 Lassimone, Cooper/Eckstein, Lahausse|last=Grahl|first=André|website=patent-infos.de|access-date=2019-03-01|archive-url=https://web.archive.org/web/20191113171647/http://patent-infos.de/overview/history-pencil-sharpeners-1850.html|archive-date=13 November 2019|url-status=dead}}</ref>
==Galeri gambar==
<gallery mode="packed">
File:CrankPencilShapener.jpg
File:Apsco Vacuhold pencil sharpener 13.jpg
File:HighEndSharpener.png
File:SchoolPro Electric Pencil Sharpener.jpg
File:PencilSharpenerBatteryOp.jpg|Battery-operated sharpener
</gallery>
==Rujukan==
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