audiometry dosimetry surveying meter reading measure radioactive dating sampling thermogravimetry thermometry mental measurement observation densitometry activity angulation anemography cephalometry viscosimetry gravimetry fetometry actinometry arterial blood gases mensuration telemetry reading hydrometry quantification viscometry quantitative analysis sound ranging pelvimetry plumbing photometry seismography anthropometry tonometry quantitative chemical analysis anemometry hypsography spirometry foetometry measuring hypsometry calorimetry scaling sounding bathymetry micrometry algometry