D dsmart Plumbers Arms member Plumber Gas Engineer Messages 187 Nov 28, 2014 #1 Buying a testo analyser, does the date it needs re calibrated come up on the screen when you switch it on?
Buying a testo analyser, does the date it needs re calibrated come up on the screen when you switch it on?
Reg Man Plumbers Arms member Plumber Gas Engineer Messages 3,012 Nov 28, 2014 #2 Needs calibration once a year. Not on screen.