It includes the function of vacuometer, atmospheric pressure altimeter, thermometer (environment) and pressuremeter (for example the standard pressure meter of sphygmomanometer calibration).
Measurement of thermel resistance black painting was described,and thus calibration factor of the black painting of the response area of the absolute radiometer.
California Instruments joins AMETEK as part of its Electronic Instruments Group (EIG) -- a provider in advanced monitoring, testing, calibrating, and display instruments.