Ruler: Type and how to use? : r/whatisthisthing

This 6 ruler with raised metal studs. One has a point and one has

Small black plastic item, domed one end with metal insert, hook

Rulers for Dummies : r/Woodcarving

Some type of ruler or measuring device with different numbers on

What is Ruler? Definition, Types, Examples, Facts

Found this bullet in the letter box. Can anyone identify which

Starrett Spring Tempered Steel Rule with Satin Chrome Finish

Small plastic clip type of object with a spring on it - 3/4 total

What are these 12 rulers used for? They don't have standard marks

What Is This Thing?”: 50 Times People Stumbled Upon Mysterious

Metal looking tweezers with ruler on it. : r/whatisthisthing