- The DSL is an adjustable bubble protractor used with a number of Curv-O-Mark tools (0721-0003, 0721-0005, 0721-0006, 0721-0007, 0721-0017, 0721-0030)
- The protractor covers 180 degrees through two 90 degree quadrants, reading 2-1/2 degree increments
- The bubble is cast in the aluminum dial
- Contact Heavy Maintenance Supply 205-384-5284 for more information