Sony Digiruler is a magnetic tape scale for display and feedback applications.   SL130-PL20 (tape scale and read head for DRO systems, 10µm resolution, 30m travel)   SL110-PL20 (robust spar type scale and read head for DRO systems, 10µm resolution)   SL331-PL60-MJ (scale, read head and interpolator providing A/B quadrature output, 4µm resolution to 8m travel. Real time output and reference facility)   SL130-PL80 (tape scale and read head unit A/B quadrature output, 10µm resolution to 30m travel)   SL700-PL101-MJ620 (high accuracy tape scale, read head and interpolator board, A/B quadrature output, 1µm resolution. Built-in referencing system)