3M 54295, Particulate Filter 2096, P100, with Nuisance Level Acid Gas Relief, 7000002048, 100 EA/Case 
Insize 4906-B200, BLOCK LEVEL, 8×8″, 6928640378843
$1,159.99
Sensitivity .0012in/ft (=0.0057?)
No need to set zero before use
Three V-grooves for shafts (shafts diameter .76~4.56″)
With longitudinal vial
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