Most useful app I have – Drill and Tap Tool - Thread Tapping & Through Hole Review

My son showed me this app on his phone. This was the 1st download I did when I got my phone. I use it every day in my shop. It's a great quick reference. Saves time and footsteps. I really like this one. If you are a mechanic or machinist you should have this app.
Review by #1Caipira on Drill and Tap Tool - Thread Tapping & Through Hole.