If you haven't already zero the scale. I will assume you have cleaned it and checked all the pivot points. With the scale adjusted to zero the pointer should position itself at the center of its scale. If it is not there is a adjuster at the front of the scale that will move the scale up or down. Adjust that until the pointer is centered. Once centered check with the weights you have. Other than that its over my head.
May have been damaged. Good luck
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I zero the scale, I've cleaned and checked pivots. My issue is when I put on 50 grains of my test weights, it doesn't measure 50grains
Several years back I weighed about eight or ten check weights on a lab grade electronic scale. None were dead on the money, and these weights were then measured on a second and third lab grade scale. All the wieghts were fairly close close, but never right on the advertised weight. (most all were within a couple tenths of a grain). I then checked each scale with a set of check weights that were certified by the Feds. They were very close, but once again showed an extremely slight error. I inquired about this error, and was told to clean the check weights, and they were almost perfect.
You can "Tune" the zero on the 10-10 by adding or subtracting lead shot from the part that hangs from the balance bar. If you shake it, it rattles, that is the balance weights, unscrew it in the center and inside you will find various sized little round weights, you can add (lead shot) or remove the existing weights to get the beam to balance.
BUT first make sure there are NO missing parts that may have caused the problem.
It should have all of the parts shown in the picture PLUS a little nylon screw that holds the fine adjuster in place.
Make sure you have the unit on a SOLID level surface, then level the scale body before you calibrate the beam.
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