# Function of a hair –spring in a pressure gauge

**URL:** <https://forumautomation.com/t/function-of-a-hair-spring-in-a-pressure-gauge/51>\
**Category:** Pressure Measurement\
**Created:** [October 2, 2014, 5:30pm UTC](https://forumautomation.com/t/function-of-a-hair-spring-in-a-pressure-gauge/51 "2014-10-02T17:30:02Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![instrumen](https://forumautomation.com/letter_avatar_proxy/v4/letter/i/65b543/32.png) [@instrumen](https://forumautomation.com/u/instrumen)\
**Post date:** [October 2, 2014, 5:30pm UTC](https://forumautomation.com/t/function-of-a-hair-spring-in-a-pressure-gauge/51/1 "2014-10-02T17:30:03Z")

</div>

Hair – spring in a pressure gage eliminates the Hysterisis (backlash/angularity) error caused in the quadrant (gear and pinion mechanism) and the weight of the pointer.