# How much pressure/vacuum is that?

**URL:** http://forum.driveonwood.com/t/how-much-pressure-vacuum-is-that/4189
**Category:** General Discussion
**Created:** [November 21, 2018, 3:29pm UTC](http://forum.driveonwood.com/t/how-much-pressure-vacuum-is-that/4189 "2018-11-21T15:29:46Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![spaco](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/spaco/32/28003_2.png) [@spaco](http://forum.driveonwood.com/u/spaco)
#### Post date: [November 21, 2018, 3:29pm UTC](http://forum.driveonwood.com/t/how-much-pressure-vacuum-is-that/4189/1 "2018-11-21T15:29:46Z")

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Here’s a bar chart (no pun intended) that shows the relationships of several pressure measures to eachother, using One psi as the reference:

 ![image](http://forum.driveonwood.com/uploads/default/original/3X/e/8/e8c902b8912462238b97d9a304beb56b63081d30.jpg)

It resulted from a discussion on another forum where adapting a gasoline generator to propane was being discussed.  
These days, when I look at pressure or vacuum gauges to buy, i often see a dual scale with one of these other measures on it.  
Of course there are several other pressure/vacuum measures in use, too.  
Inch/ounces, torr, microns, etc..

## Pete Stanaitis