[ 480 ] 
The following Table for the Micrometer I received from 
the late Mr. Short, along with the Inllrument. 
Wm. Wales. 
Decim. 
< 
Inches 
of an in. 
*-» 
:3 
3 
f u 
/ /r 
•-I 
if 
// 
I 
6 50,2 
0,05 
0 20,5 
I 
0,8 
20 
16,4 
2 
13 4 o >4 
10 
0 41,0 
2 
1,6 
21 
17,2 
3 
20 30,6 
15 
I 1.5 
3 
2,5 
22 
18,1 
4 
27 20, g 
20 
I 22,0 
I 42,6 
4 
3»3 
23 
18,9 
S 
34 
^5 
5 
4,1 
24 
19 7 
30 
2 3.1 
6 
4-9 
35 
2 23,6 
7 
8 
5.7 
40 
2 44,1 
6,6 
45 
3 4.6 
9 
7.4 
50 
3 ^ 5*1 
10 
8,2 
55 
3 45,6 
; II 
9.0 
60 
4 6,1 
i 12 
9,8 
65 
4 26,6 
! 13 
10,7 
70 
4 47,2 
H 
11,5 
75 
5 7,7 
i 15 
12,3 
i 
80 
5 28,2 
13. « 
1 
85 
' J7 
13,9 
1 
90 
1 6 9.2 
1 18 
14-8 
1 
1 
95 
, 6 2Q,7 
19 
15,6 
. 
1769 
Times 
per 
clock 
Apparent 
Times 
Parts of 
the mi- 
crometer 
Vlicro- 
meter re- 
duced 
Obfervations on the Tranfit of Venus. 
In- 
Ver- 
Tune 
h ' h 
h ! n 
ches 
nier 
/ // 
h 3 
0 56 49 
0 57 0,6 
Exterior contaft at the ingrefs 
J. D. 
56 56 
0 57 7,6 
Ditto 
W. W 
I 15 10 
I 15 21,3 
Interior ditto 
W. W 
1.5 14 
I 15 25,3 
Ditto 
J. D. 
57 21 
57 31 ? 
0,4c 
18 
2 57>5 
Dilt. of $ ’s farthell Hmb from the O’s neared ^ 
58 36 
58 46 f 
0,10 
22 
0 57,5 
? *s diameter off the fcale 
2 116 
2 I zb\ 
4,60 
4 l 
31 32,3 
0’s diameter 
2 
Cloudy a fliort time 
4 II 
4 2 ii 
4.25 
10 
29 13.3 
Did. of Venus’s farthed limb from the O’s farthed 
5 5 « 
6 8i 
o,ic 
19 
0 58,2 
? ’s diameter on the fcale r J* 
■ 
7 33 
7 43 i 
0,5c 
°i 
3 ^7,1 
Did, of J ’s farthed limb from the Q ’s neared 
9 9 
9 i 9 l- 
0,10 
19 
0 58,2 
S ’s diameter on the fcale 
10 26 
10 36^ 
0,15 
0 
0 59>9 
Ditto off the fcale ’* * 
12 0 
Cloudy 
1769 
