This old Redding scale still won't zero.

[bigoledude]

Please forgive me for reposting.  My computer refuses to let me attach pics to a REPLY.  If I attach them to an orginal post it seems to be OK.

I gave the scale brief cleaning.  In these photos, you can see that it took two small nails and the leveling screw maxed-out to get the beam to start moving.

I owned a RCBS 10-10 for many years and should have known better than to have the small tab to the left.  But this did not solve the problem.

My 10-10 and the many photos I found for this old Redding scale show the loop-and-pan set-up.  Where the bottom of the pan is recessed to sit inside the wire loop.  I assume this weighs a little more than this set-up in my photos.

My question is;  If I add some weight to the end of the beam where the double-nuts are, until it sits smack on zero, will the scale measure correctly?   

[charles p]

You could weigh a bullet and get a good idea.  I assume a bullet is within +/- a grain of being accurate.  Have a friend bring his scale over for the fine tuning or weigh several different items in order to check you accuracy over a fairly wide range of weights.

[wncchester]

"My question is;  If I add some weight to the end of the beam where the double-nuts are, until it sits smack on zero, will the scale measure correctly?"

Yes.   

It appears you are trying to zero the old scale with a pan and hanger from a Lee scale.  The origianal pan and hanger simply weighed quite a bit more.  Make the beam level with the left side screw, hang your pan on it and add enough weight to the nuts to bring it to a rough zero, finininsh with the leveling screw and all will be well.

It's a dead-on accurate scale but you will soon see why men stayed awake at night trying to think of a way to quickly stop the swinging without affecting accuracy.  Magnetic dampening was the correct answer!

[bigoledude]

I just took a penny, a nickle, and a quarter to the drug store and had them weigh them for me.  I added weight to the end of the beam till it was possible to zero the scale.  The units-of-measurements he gave me were in grams like medicine is weighed.  The conversion table was easy to find online.  This little scale is dead-nut, smack-on exactly accurate!

He didn't weigh the dime I gave him and didn't give me the dime back either.  I guess the dime rolled under something or somehow got lost.  LOL

Just in case you were wondering;

Quarter=87.6866
Nickle=76.5907
Penny=47.0532

[OR-E-Gun Bill]

He didn't weigh the dime I gave him and didn't give me the dime back either.  I guess the dime rolled under something or somehow got lost.  LOL

The dime should weigh around 35 gr. or 2.268 grams according to the U.S. Mint 
http://www.usmint.gov/about_the_mint/index.cfm?flash=yes&action=coin_specifications

Bill

[billy_56081]

Adding weight to the pan, (the dead load) will not change the lever rario of the scale and it will weigh accuratly. I happen to work on scales for a living.  

In fact when I first started in the buisinass, I was having a problem figuring out how to zero a fan scale and when I asked, old Dick said well ya just add weight to or take it out from under the platter you dumbXXX.