THE BASIC PRINCIPLES OF TYPES OF SCREW HEADS FOR SCREWDRIVERS

At times referred to as jeweler’s screwdrivers, you employ precision screwdrivers largely for fixing appliances, electronics gear and some car accessories. They’re also helpful for daily tasks like tightening your eyeglass frames.The Robertson screwdriver, generally known as a square screwdriver, contains a sq.-shaped tip. Invented by Peter Lym