Millions of dollars’ worth of fuel, as well as other liquids and gases are bought and sold every day across Australia. The quantities of these commodities are usually measured by flowmeters as they flow through delivery pipes. Chess, therefore has designed the ‘Prover’ in which provides an efficient measurement and calibration process.

A 15 litre, 200 litre and a 600 litre are all available with all three sizes being fabricated from 304 stainless steel, and manufactured with a brass adjusting screw which makes calibration an easier process.