Features:

• Large and clear LCD readout
• The ZERO/ ABS key allows the display to be Zero-set at any slider position along the scale for incremental comparison measurements.  The switch will also allow return to the absolute )ABS) coordinate ad display of the true position from the origin point (usually jaws-closed point)
• Data Hold Unit *959143) is optional
• Carbide-tipped jaw type calipers are also available
• With thumb roller (except for models 500-500-10, 500-501-10 and 500-502)
• Supplied in fitted plastic case (except 1000 mm supplied in wooden case)

Technical Specification:

Function:
Origin-set, Zero-setting, Data output, inch/mm conversion
(inch/mm models ONLY) 
Alarm: Low voltage, Counting value composition error