14 
Captain Kater/s account of the 
Standard Pound 
Divisions. 
No. 3. 
Divisions. 
Error 
Divisions. 
Mean. 
Error 
in grains. 
m 0 ^ w 
0000 
1 1 1 
00 O'OO^ 1 -'. 
6 0 6 6 
illl 
- 0,3 ~ 
— 0,9 
-0,5 
-0,4 J 
— 0,52 
— ,0065 
No. 4. 
+ 0,3 
+ 0,1 
+ 0,5 
— 0,1 
0,0 
— 0,1 
+ 0,3 
I + 0,1 
— 0,2 
0,0 
— 0,4 
— 0,1 
0,0 " 
0,0 
— 0,7 
+ 0,1 
— 0,4 
0,0 
> 
— 0,17 
— ,0021 
No. 5. 
— 0,1 
0,2 
— 0,1 'J 
+ 0 
0,0 
— 0,1 
+ 0,1 
+ 0,2 
+ 0,1 
+ 0,2 
-j- 0,2 
0,0 
» — 0,08 
— 0010 
+ 0,2 
+ 0,1 
— 0,1 
+ 0,3 
— 0,2 
— 0,5 
— 0,2 
— 0,1 
+ 0,1 
The following quantities were added to the different 
weights : 
To No. 3 • - - ,005 grains. 
4. ,002 
5- ,002 
Mr. Robinson exchanged the balance I had hitherto used 
for another, which he thought superior. The mean of many 
trials gave 0,7 of a division for the variation occasioned by 
one-hundredth of a grain. 
