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spine tester

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Justin Snyder:
Steve, I have a dial indicator that goes to 1" without even registering on the scales. I just got lucky I guess.  Justin

DanaM:
You lost me on this, do you mean to say the dial indicator puts up 8oz of resistance at 0.5"???
Hmm now I have to devise a way to measure the resistance and subtract it from the reading. Correct?

jdwilltx:
I took one apart yesterday that I have here at work.  It has this little spring in it.  I have been trying to think of how to remove the spring and still make it work.  ???  Maybe the spring could be stretched.  It seems like it would be easier to do that than to subtract the resistance from the reading.  The one I ordered was a cheap one so maybe it will not have any resistance. 

Jeremy

jdwilltx:
I think I figured it out.  Actually zLego figured it out.  Look at the first picture he posted earlier in this thread.  The dial indicator is upside down yet the plunger is hanging down.  So he must have removed the spring.  So you just set the arrow under the plunger and on the stands.  Zero out the indicator and put your weight on.  No resistance at all!  This should be very accurate.  Now I just wish my dial indicator would show up.  I am tired of waiting!

Jeremy

Wasatchhawk:
I bought a dial indicator at Harbor freght last saturday for $7.95.  I don't know if they are still on sale or not.

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