Description
- 7" square has a 7" outside scale, 6" inside scale plus a 3" scale on the bottom & 1 1/4" on the ends
- 12" square has a 13" outside scale, 12" inside scale plus a 5" scale on the bottom & 1 3/8" on the ends
- Outer rule is 16ths scale and has left to right and centering rule with small drilled holes every 1/16"
- Inner rule is 32nds scale and has left to right rule with small drilled holes every 1/8"
- Angle markings and drilled holes in the center from 5° to 60° in 5° increments plus a 22.5°
- Aluminum base with blue anodized finish is 1/2" tall and blades off set at 1/4" and 3/8" and a 45° cut out
- Squareness: 0.0002" per inch
- Laser engraving on both sides of 2 mm blades
- Sets include a mechanical pencil and lead refills
- Supplied in protective box