Oversized 0 F. vial for easy viewing.
Four rare earth magnets for phonomenal holding power.
CNC milled accuracy from billet 6061 aluminum alloy.
Extra large "V" groove system :
Easily straddles up to 10" diameter.
4 Precision vials -45 minutes of angle accuracy-horizontal, vertical, 45F. and 30F.
Horizontal vial visible from all four sides, including magnetic or "V" groove edges..