Level Builder Should your level be: Acrylic Acrylic Tubular VialsAcrylic Circular VialsGlass Circular VialsGlass Tubular VialsPlastic Circular LevelsPlastic Tubular Levels Diameter 0.236" (6.0mm)0.276" (7.0mm)0.315" (8.0mm)0.370" (9.4mm)0.374" (9.5mm)0.375" (9.5mm)0.386" (9.8mm)0.394" (10.0mm)0.438" (11.0mm)0.500" (12.7mm)0.590" (15.0mm)0.610" (15.5mm)0.687" (17.4mm)0.708" (18.0mm)0.748" (19.0mm)0.750" (19.0mm)0.787" (20.0mm)0.866" (22.0mm)0.875" (22.2mm)1.000" (25.4mm)1.181" (30.0mm)1.250" (31.8mm)1.299" (33.0mm)1.438" (36.5mm)1.500" (38.1mm)1.750" (44.5mm)2.000" (50.8mm)2.250" (57.2mm)2.750" (69.9mm) Sensitivity 1 Minute (60 seconds) per 0.1"10 min/.1" (8min/2mm)130 Min /.1"(102mm/2mm)130 min/.1" (102min/2mm)20 min/.1" (16min/2mm)20 min/.1" (18min/2mm)24 Min/1"24 Min/Division30 min/.1" (24min/2mm)35 Min/2mm45 min/.1" (35min/2mm)60 min/.1" (47min/2mm) Fluid ClearYellow Configuration 2 Circles2 Lines3 Concentric Circles4 Concentric Circles4 LinesCrosslinesMulti CirclesOne CircleSensitivity: 10 min/DivisionSix (6) Concentric Circles Build Build Step One`` Step Two Step Three Step Four Step Five Build