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# Title: Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences (shelfmarks Leibn. Marg. 71; ZEN Leibn. Marg. 71)
# Folio - , page id 806933011:0483
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5omin. (beins ee Complemene oE che othe
N coS, where ic must be sec up, lavins the In-
dex upon che Norch and Souch Liaieur: Turn
ic about rill rou sec rhe tirst Scarion N, Then fix it.
And turn ehe Index about, rill chroush che
Sighus rou see A, and nore What Dcgrees the
Index curteth; 25 31 des. 30 min. Lhen Turr
che Index about to B, C, D, (90. notHIS TheDC.
grees cut by che index accres one, and let
chuS,
100 Foot, and contequemly he Anele C 9 des
Evo, 10180 dc3.)
And S. CBA: C A:: S. compl. C AB: C B
5000: 448,6: : 59050
: 506, 2
Sorhe Distance srom C c0 A is 448, 6 FOOT;
and Trom C 10B 506, 2 FOOL.
remote from pou: as, Churches, TOWCES,
Stips at Sea or such like; and to mate a Map
of the same.
Suppose charthe Poins A, B, C, D, land l,
vere Foules, Churches, Forvers, or the like,
and thac ic as required eo make a Draught ot
chem, represemins cheir Siruarion, and crue Di
Atance one trom anorher.
them donn in a Faese Luleu 1o1 ilat purpole
Then S. BCA: AB:: S. CBA: AC
9050 : 100: : 5000 448, 6
Tom 1o tabe che Distances os divers Thinc:
At ihe first Sta-)A ust sccbnd
ion the In
dex Cut
Station thc
ade cut
Nom eo protract these Oosetvations.
r. Dran a Line at length, 25O P; Whereon
cake any POinE, 25 N, FOr VouE ArA Station:
ApPIY thC CCNErC OF VOuT PFOtFaCtOT 1ONI, and
its Diamerer upon che Linc OP.
e. Flaring vour Table of Observations betore
vou, prick oA che Deorées obserred, alonq che
Limb oF rour Protractor; and dea che obscure
Lines NA, N B, NC, (90
3. From Come Scale OF equal PArES (ansiveT-
able ro the Bisnels rou incend vour PIOr) take
Of 220 Perches, and set them trom N+OS.
A. AppIY ThC CCNErO OF THC PFOEraCtOF 1OS.
and ies Diametet upon O P, and prick OA YOur
Obserrations at the second scation: and deaw
the obscure Lines S A, SB, SC, (90. (From S
chrouxh che sereral Marks made on che P’aper
cuntins che Lines drawn before, N A, XVB
NI C, (90. in The Poins, A, B, C, D, (90. Whictu
Poines Mall represent che sererat Strips, 25 chey
lic ac Anchor; or che sereral ZOWerS, OP e
mackable Places ro be plorec.
To male a Scale co measure any Distance upon
this Ptot.
Tec a Line be so divided, chac che Distance
YS may be 220 Pares chereot, 25 the Line
L M; For the Distance NVS, sec upon chis Scale
Tec vour Srations Be S and VV. Set vour lu will reach trom 200 t020 on che small Divitions.
strumene aE DI, and curn iE abOUE uxon che
Socker eill che Nccdle tang directly orer ille
Meridian Line oF the Chara in the Borrom ot
the BOX, che North end of che Necdle over rhe
Flover-de luce; ihen stere jour Instrument Fast.
Then rum che index abour, rill chrough che And che Scale beins chus divided and num-
Index curs, wrhich suxpole r0 bc 60. Thenturn) che PIOr.
the Index abouc rill rou sec B, and marke Wvhat
Do chus wich all che rest, be chere never 10
Also meature ihe Distance verween N vour
10c
200
mats.
The visuat L.les Malle at BMM scacicts, 17
Arst Scation, and S che secon scacon, Wheh istheir Incerlections, do constiture several Richt
tave
3
Sighes vou sec A, and noce Whac Degrée che bred, son may mealure ans Distance uxon
Deprees is cut By che Index; 25 74 deg. 30 min. Fo measure ans Distance, ehus laid donn, by Fri-
sonomecleat C alculation.
220 Perches: And brins Yeue a dit linea Friansles; in eiebes et ntict von ui