id rather not pay the 50 usd + shipping for one of their guages, is there such thing as a pressure guage that might be used for say a bar b-q propane bottle, but instead will fit onto my nitrous bottle? like can i go to home depot or something and get one

thanks

 

Lets se a pic on the zex unit.

EDIT: I was able to find this crappy pic.

 

If I gould get a better pic I bet I could find the same gauge at a welding supply place or somewhere that deals with compressed gasses.

Autometer makes a gauge. I dunno how much it costs though but you can mount it to your dash wich would be way more convienent.