Originally Posted by
Platy
It just occurred to me that maybe the OP doesn't have a pump. If that's true, he/she wouldn't want to use a tire gauge to routinely check the pressure.
It would cost maybe 50 cents to air up at a convenience store. Some stores have air machines that take, as an alternative to coins, a daily code that you can punch in. If that's the case you can get the code from the clerk after you buy whatever qualifies you for a free shot of air.
I don't trust those pumps. They emit air way to fast, and don't work with a presta valve. Besides, 50 cents a week to air up your tires is way too expensive!