The mariners magazine, or, Sturmy's mathematical and practical arts containing the description and use of the scale of scales, it being a mathematical ruler, that resolves most mathematical conclusions, and likewise the making and use of the crostaff, quadrant, and the quadrat, nocturnals, and other most useful instruments for all artists and navigators : the art of navigation, resolved geometrically, instrumentally, and by calculation, and by that late excellent invention of logarithms, in the three principal kinds of sailing : with new tables of the longitude and latitude of the most eminent places ... : together with a discourse of the practick part of navigation ..., a new way of surveying land ..., the art of gauging all sorts of vessels ..., the art of dialling by a gnomical scale ... : whereunto is annexed, an abridgment of the penalties and forfeitures, by acts of parliaments appointed, relating to the customs and navigation : also a compendium of fortification, both geometrically and instrumentally / by Capt. Samuel Sturmy.
About this Item
Title
The mariners magazine, or, Sturmy's mathematical and practical arts containing the description and use of the scale of scales, it being a mathematical ruler, that resolves most mathematical conclusions, and likewise the making and use of the crostaff, quadrant, and the quadrat, nocturnals, and other most useful instruments for all artists and navigators : the art of navigation, resolved geometrically, instrumentally, and by calculation, and by that late excellent invention of logarithms, in the three principal kinds of sailing : with new tables of the longitude and latitude of the most eminent places ... : together with a discourse of the practick part of navigation ..., a new way of surveying land ..., the art of gauging all sorts of vessels ..., the art of dialling by a gnomical scale ... : whereunto is annexed, an abridgment of the penalties and forfeitures, by acts of parliaments appointed, relating to the customs and navigation : also a compendium of fortification, both geometrically and instrumentally / by Capt. Samuel Sturmy.
Author
Sturmy, Samuel, 1633-1669.
Publication
London :: Printed by E. Cotes for G. Hurlock, W. Fisher, E. Thomas, and D. Page ...,
1669.
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This text has been selected for inclusion in the EEBO-TCP: Navigations collection, funded by the National Endowment for the Humanities.
Link to this Item
http://name.umdl.umich.edu/A61915.0001.001
Cite this Item
"The mariners magazine, or, Sturmy's mathematical and practical arts containing the description and use of the scale of scales, it being a mathematical ruler, that resolves most mathematical conclusions, and likewise the making and use of the crostaff, quadrant, and the quadrat, nocturnals, and other most useful instruments for all artists and navigators : the art of navigation, resolved geometrically, instrumentally, and by calculation, and by that late excellent invention of logarithms, in the three principal kinds of sailing : with new tables of the longitude and latitude of the most eminent places ... : together with a discourse of the practick part of navigation ..., a new way of surveying land ..., the art of gauging all sorts of vessels ..., the art of dialling by a gnomical scale ... : whereunto is annexed, an abridgment of the penalties and forfeitures, by acts of parliaments appointed, relating to the customs and navigation : also a compendium of fortification, both geometrically and instrumentally / by Capt. Samuel Sturmy." In the digital collection Early English Books Online 2. https://name.umdl.umich.edu/A61915.0001.001. University of Michigan Library Digital Collections. Accessed June 22, 2025.
Pages
descriptionPage 51
TANGENTS.
A Table of Natural Tangents to every Degree of the Quadrant.
De
Tan.
De
Tan.
De
Tan.
De
Tan.
De
Tangents.
1
17
19
344
37
753
55
1428
73
3270
2
34
20
363
38
781
56
1482
74
3487
3
52
21
383
39
809
57
1559
75
3732
4
69
22
404
40
839
58
1600
76
4010
5
87
23
424
41
869
59
1664
77
4331
6
105
24
445
42
900
60
1732
78
4704
7
122
25
456
43
932
61
1804
79
5144
8
140
26
487
44
965
62
1880
80
5671
9
158
27
509
45
1000
63
1962
81
6313
10
176
28
531
46
1035
64
2650
82
7115
11
194
29
554
47
1072
65
2144
83
8144
12
212
30
577
48
1110
66
2246
84
9514
13
230
31
600
49
1150
67
2355
85
11430
14
249
32
624
50
1191
68
2475
86
14300
15
267
33
649
51
1234
69
2601
87
19081
16
286
34
674
52
1279
70
2747
88
28336
17
305
35
700
53
1327
71
2904
89
57289
18
324
36
726
54
1376
72
3177
90
0000000
Infinite.
A Tangent Line is always falling without the Quadrant, and is drawn at the end of a Semidiameter at Right Angles, as B 6 in the Fundamental Di∣agram, which is the Tangent of the Arch BC 60 Degrees, as in the Table of Tangents you shall find it to be 1732 equal parts, which take with your Compasses from A, when you have conti∣nued the Line beyond B, take 173 parts, and that will reach from B to G, the Tangent of 60 Degrees in the Scale, and 8 H is the Complement Tangent 30 Degrees 577 parts; therefore take 57 parts, it will reach from B to the length of 30 Degrees; and so of the rest.
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