Empire True Blue Magnetic Jamb Set, Vial Type: Block, Number of Vials: 3, Vial Material: Acrylic, Vial Positions: Level, Plumb, Accuracy: 0.0005 in/in, Number of Hang Holes: 1, Magnetic/Nonmagnetic: Magnetic, Aluminum, Blue, 32, 78 in L

STABILA levels are unparalleled with regard to their accuracy and dependability. The secret - the vials made of block acrylic glass are firmly epoxy-locked in the frame. A ideal system. The vial is firmly cast in the high-strength aluminum frame with non-shrink epoxy. No re-adjustment, no realignment, no tensioning against springs made of steel or fatigued plastic, no welding or clamping stresses. Just as accurate after 10 years as on the first day.

True Blue vials are accurate to within 0.00050 in per in in all 10 level and plumb working positions. Dual molded rubber endcaps for extreme shock resistance, 300 deg view top-reading level vial. Heavy-duty 6061 aircraft aluminum chassis and ergonomic rubber hand grips.