Starrett 3805B measures Shore A values for a wide variety of soft materials including, rubber, soft vulcanised (i.e. tyre), natural nitrile, elastomeretric materials (rubber and rubber-like) GR-S, GR-1, neoprene, thiokol, flexible polyacrylic esters. other soft materials including wax, felt, leather etc. • Extra large LED display. • Simple 3 button control. • Auto HoLD feature. • Measuring range: 0-100 HSA. • Deviation: <1% H. • Resolution: 0.5 H. • Accurate and repetitive deviation = 20~90 HSA. • HSA <+/ 1grade.