Mahr 2191800 Marsurf Pocket Surf IV Handheld Surface Roughness Tester, Ra Rmax Ry Rz, 10 μm Piezoelectric Probe, Cabled RS232C USB 6C977 Features Prescreen Entries for Benzene Features Prescreen Entries for Benzene with an Optional Convertible Kit Sensitivity + 3 Degrees F Thermostat Type Line Voltage Application Heat or Cool Control Type Knob Number of Heating Stages 1 Temperature Sensitivity + 3 Degrees F Maximum Operating Temperature 110 Degrees F Enclosure NEMA Rating NEMA 4X Enclosure Color Gray Minimum Operating Temperature 40 Degrees F Number of Cooling Stages 1 Temperature Control Range 40 Degrees to 110 Degrees F Number of Poles 1 Full Load Amps @ 240V AC 12 A Resistive Amps @ 208V AC 25 A Stages 1H 1C Enclosure Material Plastic Pilot Duty Rating 125VA @ 120 to 277V AC Differential Type Fixed Operating Temperature Range 40 Degrees to 110 Degrees F Switch Type Action SPDT 35 micron m Drive Unit Principle Skid Construction Cast Aluminum Measuring Condition Standards DIN ISO JIS Profile Resolution 0 3 micrometer 999 microinch Maximum Operating Temperature C 45 Degrees C Operating Position Horizontal