■ Drive Sizes: 1/4 through 3/4

■ Accept variety of heads to suit specific application requirements.

■ Common center principal allows simple exchange or replacement of heads without need for recalibration.

■ Choice of micrometer adjustable or single setting (preset) models.

■ Accuracy is ±4% of setting right hand and ±6% of setting left hand within upper 80% of scale.