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.
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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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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 8, 2024.
Pages
descriptionPage 13
CHAP. III. How to take the Plott of a Field at one Station taken in any Angle thereof, by the Sea-Compass.
IN the Figure of the Field following, place your Compass at M, set your Brass-Diameter right over the North and South points or Line; then first direct your Sights to A, which let be supposed to be 22 degr. 15 min. N. E. which Note in your Field-Book, as before; then measuring the distance with your Chain MA which let be 8 Chains 46 Links, which place in your Field-Book according to former directions.
Secondly, Direct your Sights to B, the degrees cut off by the Index, suppose 42 degr. 45 min. and suppose the distance measured to be MB 10 Chains 21 Links, and put them down also in the Field-Book.
Thirdly, Direct your Sights to C, the degr. cut is 66 degr. 30 min. and the distance MC 1••Chains 64 Links, put these in your Field-Book also, as before; and in the same manner you must deal with the other marks DM, and EM, and MF, and MG; and so having them all in the Field-Book, they will stand as followeth.
[illustration] geometrical diagram
The Figure of the Field-Book.
M
Deg. Min.
C. L.
North.
South.
East.
West.
A
N E
22 15
8 46
B
N E
42 45
10 21
C
N E
66 30
11 64
D
N E
86 45
11 23
E
S E
57 30
11 68
F
S E
49 45
10 15
G
S E
18 00
7 72
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