Vecteur Stock Black & white vector illustration of straight edge with t-square. Line icon of instrument for architect, drafter, engineer. Technical & mechanical drawing tool. Isolated object | Adobe Stock
What are engineer's straight edges made of? - Wonkee Donkee Tools
What is an engineer's straight edge? - Wonkee Donkee Tools
Amazon.com: OEMTOOLS 25355 24" Straight Edge Steel Precision Ground Machined Straight Edge, Use with Feeler Gauges for Accurate Automotive Repairs, Checks Cylinder Heads and Engine Blocks, Made in The USA : Automotive