THE ROYAL ARTILLERY INSTITUTION. 
315 
Table .—Continued. 
Dimensions, in inches. 
«4-l 
© Pi 
rS.S 
Kind 
of 
$ & 
14 
°J 
p) g 
§ s 
Form or article, &c. 
U 2 
d 
© 
i 
II 
* g 
metal. 
4.1 
c§j 
f 
£M 
< §j 
Q 
s 
ft 
Io < l 
Wrought - 
20 
I 
3" cylinder, 5f'" deep, solid:— 
iron. 
on 
External circumference of edges ... 
9-4 
9*2 
—0*2 
its 
do do centre... 
9-4 
9*475 
+0*075 
side. 
Depth along part cooled in air..... 
5*375 
6*150 
—0*225 
do do on W. L. ... 
5*375 
5*100 
—0*275 
do do in water. 
5*375 
6*225 
—0*150 
Longest diam. at rt. angles to W. L. 
3*000 
3*100 
+0*100 
Shortest do. parallel with W.L. and \ 
a little helow it .) 
3*000 
2*760 
-0*240 
16 
Oast- 
2 
* 
12" cylinder, 9" deep, thick :— 
iron. 
External circumf. of upper edge ... 
40*90 
41*05 
+0*15 
do do least expansion 
40*90 
40*95 
+0*05 
do do lower edge. 
40*90 
41*15 
+0*25 
17 
Cast- 
5 
* 
3" solid cylinder, 6" deep:— 
iron. 
External circumf. of upper edge ... 
9*4 
9*55 
+0*15 
do do least expansion 
9*4 
9*50 
+0*10 
do do lower edge. 
9*4 
9*65 
+0*15 
^ Figs. 20, 21. 
