Not all functions work Ive been a machinist for years. I was using an actual machinist calculator that did all functions a machinist needs. When my calculator broke I bought this. The bolt circle calculator doesnt work. Also it doesnt allow me to enter my x and y cooridnates for the bolt hole dimesion. Not every bolt circle patteren is based off of x and y zero. Ive used the feed rate function but still have yet to test the trig function. Hopefully it will actually give me an answer unlike the bolt circle calculator.
Swiss Army Knife app of Calculators! If you need a calculator for any job, get this app. It has a calculator for every job type and it's a great reference for GD&T Symbols. Well worth the .99!