Strange readings at the appliance...

[Chalked]

try putting a blow touch over the gas pipe when you send the apprentice to take a tightness test

I let my apprentice tightness test. Sometimes I crack a compression nut on an appliance, just to see if he's on the ball.

 

[townfanjon]

I have had this quite alot you can cause a rise just by holding onto the gas supply i try and test early morning or late afternoon in the sunny weather. Kop

Its strange , I have never had this happen , mind you , it may have something to do with the sun hardly shines up here in Yorkshire .

 

[mfgs]

Its annoying testing external gas runs in the sun.