Numbers and Sizes of Channels—Sizes of Verges, Pawls and Ears of Matrices.

Character.	No. of Channel.	Size of Channel.	Size of Verge.	Size of Pawl.	Size of Ear of Matrix.
e	1	50		60	40
e	2	50	75	60	40
t	3	50	45	45	40
a	4	60	70	60	50
o	5	50	65	55	40
i	6	40	40	35	33
n	7	60	75	70	50
s	8	50	60	50	40
h	9	60	70	70	50
r	10	50	60	50	40
d	11	60	70	70	50
l	12	40	40	35	33
u	13	70	75	70	60
c	14	60	65	60	50
m	15	90	105	100	80
f	16	50	75	55	40
w	17	90	90	90	80
y	18	60	70	70	50
p	19	60	70	70	50
v	20	60	70	70	50
b	21	60	70	70	50
g	22	60	70	70	50
k	23	70	90	75	60
q	24	60	70	70	50
j	25	40	50	50	23
x	26	70	90	75	60
z	27	50	60	60	40
fi	28	60	70	70	50
fl	29	60	75	70	50
ff	30	70	95	85	60
ffi	31	90	105	105	80
ffl	32	90	105	105	80
em	33	90	140	140	80
,	34	40	40	35	33
.	35	40	40	35	33
:	36	50	70	65	40
;	37	50	75	65	40
?	38	60	70	70	50
Fig	39	60	125	70	50
(	40	40	55	45	33
\|	41	40	90	90	33
‘	42	40	45	35	33
!	43	50	65	65	40
-	44	40	50	45	33
Thin	45	40	40	35	33
)	46	40	40	40	33
.	47	60	60	60	50
’	48	40	35	35	33
*	49	60	55	55	50
1	50	60	70	70	50
2	51	60	70	70	50
3	52	60	70	70	50
4	53	60	70	70	50
5	54	60	70	70	50
6	55	60	70	70	50
7	56	60	70	70	50
8	57	60	70	70	50
9	58	60	70	70	50
0	59	60	70	70	50
$	60	60	70	70	50
‥	61	100	100	95	90
E	62	90	95	95	80
T	63	80	100	95	70
A	64	90	100	100	80
O	65	80	100	100	70
I	66	60	55	55	50
N	67	90	100	100	80
S	68	70	75	75	60
H	69	100	110	110	90
R	70	90	95	95	80
D	71	90	105	105	80
L	72	80	85	85	70
U	73	90	105	105	80
C	74	70	75	75	60
M	75	100	110	110	90
F	76	80	95	95	70
W	77	110	145	145	100
Y	78	90	100	100	80
P	79	80	85	85	70
V	80	90	105	105	80
B	81	80	95	95	70
G	82	80	105	105	70
K	83	90	110	110	80
Q	84	80	95	95	70
J	85	60	75	70	50
X	86	90	110	110	80
Z	87	70	95	95	60
@	88	90	85	85	80
℔	89	90	85	85	80
& £	90	60	85	85	50
—	91	90	125	125	80
Pi	92	100

All figures, except in numbers of channels, in thousandths of inches.

*Channel No. 39 takes .125 verge and .70 pawl.

Transcriber’s Notes:

Page 28, “metalic” changed to “metallic” (“its reduction to the metallic”).
Page 42, “partion” changed to “partition” (“the right hand partition for”).
Page 60, “sprin” changed to “spring” (“keyboard keybar spring F”).
Page 60, “apiece” changed to “a piece” (“soldering a piece on the bottom”).
Page 70, “groves” changed to “grooves” (“or the small grooves which”).
Page 79, title “Keyboards.” added.

Figures 12 and 13, and 29 and 30 appear in an inverse order in the original. This has been preserved.

On page 78, some characters may not render correctly with some machine/format combinations. An illustration of the section of the page in question is included here:

Original images of this book can be found [here].