3M 30134, Spindle Extender Adapter 6 in Brush, 2 in x 1/2 in x 1 in, 7000046162 
Insize 3594-3, DIGITAL NON-ROTATING SPINDLE DISK MICROMETER, 2-3″/50-75mm, 6928640375224
$587.47
Resolution .00005″/0.001mm
Measure root tangent length of gear.
Non-rotating spindle
Button function: on/off, set, inch/mm, ABS/INC.
Data output. LR44 battery, automatic power off
Ratchet stop.
Supplied with setting standards.
Related products
Measuring/ Inspection Instruments
Insize 3594-4, DIGITAL NON-ROTATING SPINDLE DISK MICROMETER, 3-4″/75-100mm, 6928640375231
$646.39
Measuring/ Inspection Instruments
$1,184.25
Measuring/ Inspection Instruments
Insize 3294-1, NON ROTATING SPINDLE DISK MICROMETER, 0-1″, 6928640328152
$264.28