"PORTABLE; BATTERY OPERATED; MICROPROCESSOR-CONTROLLED PH METER AND PROBE W/AUTOCALIBRATION AND AUTOMATIC TEMPERATURE COMPENSATION; LCD DISPLAY SIMULTANEOUSLY DISPLAYS TEMPERATURE ALONG W/MEASUREMENT RESULTS; PH RANGE; -200 TO 19.99 W/A RESOLUTION OF 0.01; POWER SUPPLY INTERNAL NONRECHARGEABLE ALKALINE BATTERY, 9 VOLTS, 0.50 AMP-HRS; DRAWING NO. 13229E9644, CAGE 97403"