Triangular Scale Plastic Engineers Ruler, 12″ Long, White with Colored Grooves

Triangular scale delivers precision and versatility?three sides with six different scales. Essential tool for engineers. Full divided: 10, 20, 30, 40, 50 and 60 parts to the inch. White plastic. Color-Coded Grooves. Ruler Type: Triangular Scale; Length: 12″; Material(s): Plastic; Color(s): White.