Plate Level Maintenance Kit Three chamber rectangular aluminum profile with reinforcing ribs / Two coated measuring surfaces / Suitable for overhead (vial down) measurement / Extremely long extendable spirit level that adjusts for "plate to plate" measurements on most residential and commercial wall heights FEATURES Strong re-enforced frame Fully sealed solid rail (six sided) extension eliminates flex and deflection, and delivers the smoothest extension movement available. Removable 1 5/8" stand-offs reach around braces Top horizontal vial is permanently positioned at eye level. Printed scale on slide extension allows the level to be pre-set and locked to the correct wall height Vials are guaranteed for life never to fog, leak or require adjustment One Horizontal (level) and two Vertical (plumb) vials
