5V batteries (SR44 or LR44)
Fowler-Girod Test Indicators have long been regarded internationally as "the best"
• Spring-loaded and hold measurement button for ease-of-use
• Sealed back plate
• Supplied with a blade for steel and aluminum• Unique rounded head blade for safe deburring of drilled and machined holes
Fowler Involute Gear Tooth Gage Fowler Trimos V1+ with granite base 5V batteries (SR44 or LR44)With this Involute Gear Tooth Gage, it is easy to determine the diametral pitch of involute gears from 680 and 25 in inch and . 55 and612 in metric. 14 leaves with ring holder. Range of pitch: 6, 7, 8, 9, 10, 11, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 36, 40, 48, 64, 80 Pressure angle = 14. 5.