In January, a relative that works in a lab, called me and told me it was a little slow with everything going on but someone still has to be in the lab, to monitor the balances, as they are on 24/7. I told him I had a project for him to weigh some Lyman grain weights, plus some pennyweight and some grain weights that were bought in 1975.
He weighed them just one time. These are the results:
Nominal.........Actual
Weight............Weight
100 grains.....100.168 grains
50 grains.......50.062 grains
20 grains.......20.294 grains
20 grains.......20.216 grains
10 grains.......10.046 grains
5 grains............4.986 grains
2 grains............2.006 grains
2 grains............2.006 grains
1 grain..............1.038 grain
.5 grain.............. .508 grain
Later on, he ask if I would like to have these closer to the Nominal Weight, I told him sure. He said it took him several hours to remove the excess weight. These are the results:
Nominal.........Actual
Weight...........Weight
.
100 grains.....100.006 grains
50 grains.......50.000 grains
20 grains.......19.996 grains
20 grains.......20.002 grains
10 grains.......10.006 grains
5 grains............4.986 grains - was not changed
2 grains............2.006 grains - was not changed
2 grains............2.006 grains - was not changed
1 grain..............1.004 grain
.5 grain............. .508 grain - was not changed
I had no idea he would make them this close but like he said, he was bored with nothing else to do. I would have been happy if they were all within + .050 or less.
He didn't do anything to the 1, 2, two 4's, 5 and a 10 pennyweight (1 pennyweight (.dwt) = 24.000 grains) and a .5, 1, 2, 3, 4, 6, two 12's grain weights, I bought in 1975 as he said they were all within .016 grains or less.
He weighed them just one time. These are the results:
Nominal.........Actual
Weight............Weight
100 grains.....100.168 grains
50 grains.......50.062 grains
20 grains.......20.294 grains
20 grains.......20.216 grains
10 grains.......10.046 grains
5 grains............4.986 grains
2 grains............2.006 grains
2 grains............2.006 grains
1 grain..............1.038 grain
.5 grain.............. .508 grain
Later on, he ask if I would like to have these closer to the Nominal Weight, I told him sure. He said it took him several hours to remove the excess weight. These are the results:
Nominal.........Actual
Weight...........Weight
.
100 grains.....100.006 grains
50 grains.......50.000 grains
20 grains.......19.996 grains
20 grains.......20.002 grains
10 grains.......10.006 grains
5 grains............4.986 grains - was not changed
2 grains............2.006 grains - was not changed
2 grains............2.006 grains - was not changed
1 grain..............1.004 grain
.5 grain............. .508 grain - was not changed
I had no idea he would make them this close but like he said, he was bored with nothing else to do. I would have been happy if they were all within + .050 or less.
He didn't do anything to the 1, 2, two 4's, 5 and a 10 pennyweight (1 pennyweight (.dwt) = 24.000 grains) and a .5, 1, 2, 3, 4, 6, two 12's grain weights, I bought in 1975 as he said they were all within .016 grains or less.
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