If you need to cut threads on a lathe and are unsure of what change gears and quick-change settings to use, then this app is for you. Pocket Lathe Gears calculates change gear and quick-change gearbox settings for any particular thread you wish to cut on a lathe. It will also allow you to work out what gear you need, to be able to cut a particular thread i.e it can find the gear that you are missing. Works with both metric and imperial lathes. Compatible with ARMv7 devices running KitKat