● Unique window scale with fine increments.
● Accuracy is ±4% of the reading value.- STMX model: Push-through ratchet head for clockwise and counter-clockwise operation.
- STML model: Tear-shape ratchet head, both directions, easily operated reverse lever.
- STMH model: Head holder, for 9x12mm, 14x18mm, 24x32mm rectangular shank heads.
- STMR model: Round head holder Ф16, accommodate varied relevant round hole inserts.