Starrett Master Precision Levels 199 Series

Master Precision Levels 199 SeriesMaster Precision Level, 15" (380 mm)Ground and graduated main vial of 10-second accuracy; one division equals 1/2 thousandth (0.0005) of an inch per foot, or 0.04 mm per meterMain vials have seven graduations on each side of the bubbleAuxiliary level vial shows lateral position and assists in horizontal settingLevel vials are positioned so breakage is reduced to a minimumFool-proof adjustment to avoid tampering, once setSpecial alloy iron used to obtain freedom from thermal effectsCastings are thoroughly seasoned and machinedReference surface is scrapedNon-machined surfaces have a black wrinkle finishInsulation from handling by means of top plate of nonconductive material