/ Precision Measuring Tools / Precision Hand Tools / Machinsts Levels / Levels / 98-18 * Not actual product image 50445 98-18 Machinists Level with Ground and Graduated Vial 50445 Other similar products The Starrett 98 Machinists Level with Ground and Graduated Vial includes a cross test vial and a single plumb vial. 450mm (18") size, without case. Features Specifications Parts Downloads Contact Starrett Features 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 The base of the levels features an involute groove running the length of the base, which provides a reliable seat for round work 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) Double plumb vial Specifications Length (in): 18" Length (mm): 450mm Parts Member of Kit Item #DescriptionPart No.QtyInformation 1MAIN VIAL SUB ASSEMBLYPT994330 10TUBE, OUTSIDE 18"01989-1/21 20TUBE, INSIDE 18"01989-1/2A1 30END PLUG, PLAIN14924-P1 40END PLUG, C/SUNK14924-C1 50TEFLON STRIP, LONG24771-02 60SCREW, .200-40 SLOT X .631 LONG14364-01 70WSHR,.213X.437X.15614365-01 80WSHR,.213X.427X.15414927-01 90NUT, .200-4014368-02 100STUD, PLUMB LEVEL14930-01 110VIAL,11/32X.922/950 (15/16)13268-03 120PLUG, EXPANSION13879-01 130BASE #97-18NOT AVAILABLE1 140VIAL, 3 5/8X5/815024-01 150BUSHING, PLUMB LEVEL14929-01 Downloads 2D Dimensional Drawing (PDF) .pdf 40.51 kb