Delta Ohm instruments, portable and tabletop measuring instruments. Specialises in the design, manufacture and calibration of portable, desktop and industrial scientific instruments for the measurement of physical quantities. The excellent quality of the products is guaranteed by the six modern ISO 17025 accredited laboratories in Temperature, Humidity, Pressure, Air Velocity, Photometry / Radiometry and Acoustics. The Delta Ohm product range includes instruments for the measurement of: Temperature, Relative Humidity, Pressure, Light, Noise, Vibration, Air Velocity, pH, Conductivity, Dissolved Oxygen TDS, CO2.