Drill doctor has a plastic 'V' representation for 118 and another for 135 so its real easy to see what angle your bit is right on the outside of the unit. This is one of the most awesome tools in the shop. Whats so nice about it is, you can purchase the HF 115 pc drill bit set for $50 or so and never look back. I have drilled about 100 1/2" holes before needing to resharpen. Worth every penny. And my unit is 10 years old!
