ShaunCorbs Super Moderator Staff member S. Mod Plumber Gas Engineer Subscribed Messages 34,709 Solutions 1 Nov 23, 2019 #2 TBH depends what I’m doing but mostly flue gas machine so electronic
king of pipes Esteemed Plumber Gas Engineer Subscribed Messages 6,156 Nov 23, 2019 #3 Electronic but always carry a water gauge for back up
D DXCross Gas Engineer Messages 62 Nov 23, 2019 #4 +1 for electronic. Although I have a water one as back up... somewhere!
Last Plumber Esteemed Plumber Gas Engineer Subscribed Messages 4,859 Nov 25, 2019 #5 More often than not water.