Mechanical Length Gauge (MLG) Mechanical Length Gauge The MLG - Mechanical Length Gauge Specifications MLG 160-210mm Weight4 kg Vertical daylight210 mm Supply VoltageInternal battery in Sylvac CS MFPM Height400 mm Width200 mm Depth200 mm Deformation resolution0.0010 mm Standards ASTM C490Standard Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete. See also: Tram Smart