![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 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](https://preview.redd.it/small-ruler-6-inch-with-strange-markings-bought-a-slide-v0-hk54y1xz76wa1.jpg?auto=webp&s=4bb06c87518b0feb298b4cc3db3c0665305575ff)
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
![measuring instrument, strange scale, length 13 cm, weight ~20 gr, probably made of steel. Maybe a part of something? 4 cm between 8 and 11 and between 5.5 and 8.5, 2.7 cm measuring instrument, strange scale, length 13 cm, weight ~20 gr, probably made of steel. Maybe a part of something? 4 cm between 8 and 11 and between 5.5 and 8.5, 2.7 cm](https://i.redd.it/br0rm8zo2wk91.jpg)
measuring instrument, strange scale, length 13 cm, weight ~20 gr, probably made of steel. Maybe a part of something? 4 cm between 8 and 11 and between 5.5 and 8.5, 2.7 cm
![Contour Gauge Adjustable With Lock Shape Duplicator(10 Inch), Used to Replicate Various Angles, Bends and Strange Shapes Woodworking Angle Gauge (Orange) : Amazon.sg: DIY & Tools Contour Gauge Adjustable With Lock Shape Duplicator(10 Inch), Used to Replicate Various Angles, Bends and Strange Shapes Woodworking Angle Gauge (Orange) : Amazon.sg: DIY & Tools](https://m.media-amazon.com/images/I/71BqNnXKqpS._AC_UF1000,1000_QL80_.jpg)