Small ruler (~6 inch) with strange markings. Bought a slide rule on eBay and this small ruler came with it. I can't figure out its purpose. : r/whatisthisthing
Fate/Grand Order 1/4 ScaleRuler/Altria Pendragon - Premium Collectibles from Gamersheek
ConoFig Fate/Grand Order Ruler / Jeanne d'Arc
T-square 12 Inch / 30 Cm T Shape Ruler Plastic Transparent T-ruler Junior T-square Academic T-ruler Double Side Scale Measuring Tool For Drawing And G
Multifunctional Ruler -Multifunctional Geometric Ruler With 14 Geometric Figures For Drawing 20 Elementary School Common Graphics Multifunctional ...
Furyu 7 Fate / Grand Order Servent Figure Ruler / Jeanne D'Arc by Furyu : Amazon.co.uk: Toys & Games