Why do you need an expensive complex digital wireless AI/GTR unit when you can economically use the more practical, more reliable, no batteries needed analog SPG manometer to start with in the first place?Why do you need an expensive complex digital wireless AI/GTR unit when you can economically use the more practical, more reliable, no batteries needed analog SPG manometer to start with in the first place?
Well I could get a flip cellular phone to make calls. It is easier to use, has longer battery life, probably more reliable without a complex OS and you can physically remove and replace batteries. It also cannot be hacked and have all my contacts and pictures stolen and put all over the web. But hey I choose to use a smart phone.