This takes all the guesswork out of measuring, marking out, reading and transferring angles. The range is a full 180° – and the accuracy is 1/10 of a degree. The display resolution is to 5/100 of a degree. The stainless steel rule is 4 long and the steel locking knob prevents accidental slippage. The angle reading is automatic. The display numerals can be flipped over so that they can be read easily from different directions.