# Gps speedometer

**URL:** <https://community.electricforum.com/t/gps-speedometer/6392>\
**Category:** Technical Discussions\
**Created:** [October 2, 2016, 6:05pm UTC](https://community.electricforum.com/t/gps-speedometer/6392 "2016-10-02T18:05:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\
**Post date:** [October 2, 2016, 6:05pm UTC](https://community.electricforum.com/t/gps-speedometer/6392/1 "2016-10-02T18:05:52Z")

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Got one, works good, 28 bucks on Ebay

Rodney

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**Author:** ![LithDriver](https://avatars.discourse-cdn.com/v4/letter/l/7cd45c/32.png) [@LithDriver](https://community.electricforum.com/u/LithDriver)\
**Post date:** [November 9, 2016, 5:55am UTC](https://community.electricforum.com/t/gps-speedometer/6392/2 "2016-11-09T05:55:05Z")

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Hi - doesn’t seem bad. But why would I use it? Unless I’m planning to modify my car in a way that upset the speedometer (such as the wheel size), why would I need a second reading?

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**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\
**Post date:** [November 9, 2016, 4:42pm UTC](https://community.electricforum.com/t/gps-speedometer/6392/3 "2016-11-09T16:42:47Z")

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For the guys who hot rod their cars this is a cheap way to get actual MPH without any involved changes.

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**Author:** ![LithDriver](https://avatars.discourse-cdn.com/v4/letter/l/7cd45c/32.png) [@LithDriver](https://community.electricforum.com/u/LithDriver)\
**Post date:** [November 16, 2016, 4:27am UTC](https://community.electricforum.com/t/gps-speedometer/6392/4 "2016-11-16T04:27:21Z")

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> [@OLD HOUSEBOATER;33500](#):
>
> For the guys who hot rod their cars this is a cheap way to get actual MPH without any involved changes.

Of course, that makes sense! Thanks for answering 🙂