View online or download our
interactive product catalogue now.

Fast Delivery

Orders received before 3.30pm can usually
be despatched same day for standard
stock items.


Complete range of HVAC
products for the UK.

UK's Largest Stockist

We hold 10,000's of pressure and
temperature gauges and accessories in
stock for immediate worldwide despatch.

Master Test Gauges

Used to check calibration of other gauges or where extremely accurate measurement is required.
Available in diameters 100mm / 160mm / 250mm ("Full Safety Pattern" type can also be offered in 100mm and 160mm diameters)
Ranges -1 bar vacuum to 1000 bar pressure
Accuracy better than ±0.25% of full scale at any point on the scale whether on rising or falling vacuum or pressure.
Please note - When used for checking calibration accuracy of other gauges, a "Master Test Gauge" must be at least 4x greater accuracy than the instrument being checked.
For example, with a 0-400 bar range the instrument would have an accuracy of better than ± 1 bar and could be used to check and certify any other gauge where the accuracy should be ± 4 bar or higher.
Our "Master Test Gauges" are fitted with a knife edge pointer and mirrored scale to facilitate accurate reading of the scale and are supplied with a full point to point test certificate.  

Please contact us for technical guidance or quotation.