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Author Topic: Spring type bow scale?  (Read 434 times)

Offline flint kemper

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Spring type bow scale?
« on: December 30, 2011, 06:15:00 PM »
I have a question regarding the spring type bow scales. I found one in my Dad's shop and would like to use it but was wondering how to check it's accuracy and also if there is a way to calibrate it if it is off? I did a search on here but did not find anything. Thanks Flint
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Offline bjansen

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Re: Spring type bow scale?
« Reply #1 on: December 30, 2011, 06:18:00 PM »
Flint, how about pulling back a bow that you know the weight on?  If it is an older scale, that cannot be adjusted you may just need to make note how many pounds it is off + or -.
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Offline flint kemper

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Re: Spring type bow scale?
« Reply #2 on: December 30, 2011, 06:22:00 PM »
Brad, I think I can do that. No calibration huh?
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Offline 2treks

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Re: Spring type bow scale?
« Reply #3 on: December 30, 2011, 06:28:00 PM »
Most spring scales have an adjustment screw on the back or bottom. I have taken a barbell and weighed it on a bath scale and then hang it from the spring scale. That will get you pretty close.

CTT
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Offline ProArcher

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Re: Spring type bow scale?
« Reply #4 on: December 30, 2011, 10:47:00 PM »
witch one do you have

 


 
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Offline flint kemper

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Re: Spring type bow scale?
« Reply #5 on: December 30, 2011, 11:09:00 PM »
It is like the top one.
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Offline rmorris

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Re: Spring type bow scale?
« Reply #6 on: December 31, 2011, 01:52:00 AM »
If you have any weight lifting equipment around your house take a 20# weight and hang it from your scale weight lifting equipment is fairly accurately measured. See how close the weight on your scale is the weight.
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Offline Grey Taylor

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Re: Spring type bow scale?
« Reply #7 on: December 31, 2011, 02:37:00 AM »
A gallon of water weights 8.34 lbs. How many empty milk bottles do you have available?

Guy
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Offline magnus

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Re: Spring type bow scale?
« Reply #8 on: December 31, 2011, 06:56:00 AM »
The one you have ( top pic) has a screw on the bottom that is your calibration screw.
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Offline flint kemper

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Re: Spring type bow scale?
« Reply #9 on: December 31, 2011, 10:50:00 AM »
Thanks guys.
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