Sper Scientific Ltd Benchtop pH-mV Meter sized 8.5 in x 6.5 in x 2.25 in displays the parameter being measured along with time, date and temperature. Meter with rugged housing and high contrast green LCD is included with ATC pH electrode, electrode holder arm, AC adaptor, computer cable and software. Meter weighing 1.1 lbs accepts any pH or ORP probe with a standard BNC connector.