Turnkey Instruments is a manufacturer of industrial and scientific
instruments, based in
Northwich, Cheshire. We produce a range of
environmental monitors (for airborne
dust pollution),
off-road brake testers
(for heavy vehicles in quarrying, mining and rail),
road vehicle brake testers and window tint
testers. These instruments are in wide use by police forces, local
authorities and in the mining and quarrying industries worldwide.