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Starrett 12" Precision Machinists' Level # 98 This is a 12" (300mm) with Single Plumb Vial and Cross Test Vial Machinists' Levels with ground and graduated vials with the a cross test vial and is Starrett This level has a ground and graduated main vials with a cross test vial this also has a plumb vial. The vial is adjustable to a positive setting and is housed in a satin finished brass tube with a friction-fit closing cover to prevent breakage. The base of the level features an involute groove running the length of the base, which provides a reliable seat for round work such as pipes or shafting. With the cross test vial, it is possible to simultaneously level in both directions. This prevents inaccuracies in the main vial reading caused by canting the level sidewise on round work. The main level vial has a graduation that is approximately 80-90 seconds or .005" per foot (0.42 mm per meter). There six lines on each side of the bubble. |
