3M 16001, PPS Cup & Collar, Standard, 7100003286, 2 Per Carton 
Insize 4905-B500, FRAME LEVEL, 20″, 6928640378829
$1,237.47
Sensitivity .0012in/ft (=0.0057?)
No need to set zero before use
V-groove on bottom for shafts(shafts diameter .76~4.56″)
With longitudinal vial
Related products
Cartridge Roll Mandrels
Standard Abrasives 600000, Wheel Adapter, TAZ-4-1/4″-20 Female, 7010330488
$10.92