Testo is the world’s leading manufacturer in the production of test and measurement instrumentation. With years of experience, Testo develops solutions for a wide range of applications that require measurement. The endless number of solutions provided has gained more and more customers each and every year, who all benefit from the Testo range. Testo provides a wide range of portable and stationary instruments for many parameters and applications including; temperature, humidity, velocity, pressure, refrigeration, flue gas, water analysis, light and RPM.

Testo’s instruments are developed in co-operation with professionals working in the field, resulting in reliable and user friendly instruments. Testo rightly have confidence in the quality of their products and prove this with up to 5 years warranty on all Testo instruments.

With an experienced team, Testo run an independently accredited ISO 9001:2000 and ISO 17025 laboratory, committed to meeting our customers’ repair, servicing and calibration needs. With UKAS accreditation to ISO 17025, Testo offer an independent calibration service for most makes and models of humidity, dew point and temperature measuring instruments.

Testo offers an extensive range of instruments including:

  Thermometers
  Humidity meters
  Flue gas and emissions analysers
  Pressure meters
  Airflow meters
  Data loggers
  Thermal Imaging
  Refrigeration

Testo 645 Humidity & Temperature Measuring Instrument

Part Number 0563 6450