เครื่องมือที่ดีในการเจาะสว่าน
This application contains tools that will assist the home shop machinist and model engineer when working at the bench drill.
Find the correct speed setting of your drill press
Find the dividing distance when dividing a circle into a number of division - like flange holes
Find tapping hole and clearance hole for many kind of threads
Find the correct grinding angle for your drill