PENNWALT CORPORATION PORTABLE STOKES MCLEOD GAGE

PENNWALT CORPORATION PORTABLE STOKES MCLEOD GAGE NP175 GAGE 0.-50 MM. WITH INSTRUCTION ON BACK OF INSTRUMENT MCLEOD VACUUM GAUGES ARE CONSIDERED THE INDUSTRY STANDARD FOR VACUUM LOW-PRESSURE MEASUREMENTS. UNLIKE ELECTRICAL-TYPE GAGES THEY REQUIRE NO ADDITIONAL CALIBRATION OR ADJUSTMENTS. THE MCLEOD GAGE IS IDEAL FOR MEASUREMENTS OF PRESSURE BELOW 10-4 TORR (10-4 MMHG).BY COMPRESSING A SAMPLE OF LOW PRESSURE GAS TO A SUFFICIENTLY HIGH PRESSURE AND OBTAINING THE COMPRESSED PRESSURE FROM A STANDARD MANOMETER THE GAGE THEN CALCULATES THE ORIGINAL LOW PRESSURE THROUGH BOYLE'S LAW.