[johnmac]

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Here is a picture of a voltmeter I found at Radio Shack. It is also a thermometer or clock and stores the daily minimum and maximum temps. The LCD display runs on 2 AAA batteries. (I think mine are getting weak).
Radio Shack item number 63-1039. The good news is it cost me $10. The bad news is our local store had it on close-out. It may be avalible from their catalog.

 

[Dman]

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Is the gauge waterproff.

Dman

 

[johnmac]

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Dman, I'm not sure. It's kinda under the speeker front to help shield it. I guess time will tell!

 

[GWNorman]

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That not a waterproof unit, it's meant for the insides of cars etc.

 

[RedWinger]

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[johnmac]

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I was happy to run across this think for only $10. I mounted it so if it craps out, I can remove it without any mounting holes left to show. I hope rain doesn't ruin it, and will have cover it when washing.

 

[FitzAl]

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I had a similar one to this. I smeared silicone along the crack where the two halves join and it kept the rain out perfectly for pver a year, until someone stole it off the bike. :X

 

[RedWinger]

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Here is a link..to the Radio shack meter...

http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=&product%5Fid=63%2D1039&site=search

you can read the manual about spec's.....It says not to place where it will get wet! But Silicone will/can make it waterproof!!