Ground and graduated main vials.
The base of the levels features an involute groove running the length of the base, which provides a reliable seat for round work .
Base price includes Damage Waiver and Environmental Levy when hired online.
Cross test vial.
The vials are adjustable to a positive setting and are housed in a satin finished brass tube with a friction-fit closing cover to prevent breakage.
Main level vials have graduations that are approximately 80-90 seconds or .005" per foot (0.42mm per meter).