Date:	8-26-2020
Number of Hours:	0.60
Brief Description:	Smoke oil tank pressure test
First thing in the morning the manometer is down 6". Quite disappointing. Pump it back up to the reference line and go about other tasks. Doing a layup later, so put the heater on. When I come back the shed has gone from10C to 16C, and the manometer is UP 4". It is only then I realise how big a factor in this the local atmospheric pressure and temperature is. When I leave the shed with the temperature 17C I have let the pressure out to get down to the reference line twice. I'll leave it another day and see.