I just stumbled on this $30 device for determining the level of propane in your tank: GasCheck Propane Gauge
I was going to buy a scale but thinking about removing the tank from the mount and probably also disconnecting the hose makes using it a pain. This device is very clever, it uses an ultrasound beam to detect the presence of the propane. You press it against the tank at different levels and it indicates propane inside or not, at that level with a red or green LED. Have any of you tried this? It's a little pricy but if it works it could be really useful.
If there is no experience, I will get one and let you know.
I was going to buy a scale but thinking about removing the tank from the mount and probably also disconnecting the hose makes using it a pain. This device is very clever, it uses an ultrasound beam to detect the presence of the propane. You press it against the tank at different levels and it indicates propane inside or not, at that level with a red or green LED. Have any of you tried this? It's a little pricy but if it works it could be really useful.
If there is no experience, I will get one and let you know.