Apian, Petrus
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Cosmographia
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115
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114
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114
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rhead
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REGIONVM ET LOCO.
"/>
<
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48
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<
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114-01
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http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/PUBSU9QD/figures/114-01
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<
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<
s
xml:id
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echoid-s2408
"
xml:space
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preserve
">AD hanc rem opus erit inſtrumento
<
lb
/>
magnæ vtcunque quantitatis, nam
<
lb
/>
inter omnia inſtrumẽta Mathema
<
lb
/>
tica, maiora ſunt certiora, & </
s
>
<
s
xml:id
="
echoid-s2409
"
xml:space
="
preserve
">vſui
<
lb
/>
aptiora. </
s
>
<
s
xml:id
="
echoid-s2410
"
xml:space
="
preserve
">Verũ non erit neceſſe mihi
<
lb
/>
hic ſcalæ Geometricæ deſcriptionẽ
<
lb
/>
apponere, cùm vulgaris ſit & </
s
>
<
s
xml:id
="
echoid-s2411
"
xml:space
="
preserve
">cuiuis
<
lb
/>
nota. </
s
>
<
s
xml:id
="
echoid-s2412
"
xml:space
="
preserve
">Tantùm hoc ſatis erit dixiſſe,
<
lb
/>
quòd inſtrumentũ debeat eſſe, quale fere eſt dorſum Aſtro
<
lb
/>
labij, cum indice volubili, habẽs ab altero latere ex centro
<
lb
/>
inſtrumẽti pinnulã ferreã, qua ſuper baculo aut fuſte figi
<
lb
/>
poſſit. </
s
>
<
s
xml:id
="
echoid-s2413
"
xml:space
="
preserve
">Dimẽſurus igitur loci viſi diſtantiam quantumuis
<
lb
/>
longã, fige in campo vel agro baculum, 5. </
s
>
<
s
xml:id
="
echoid-s2414
"
xml:space
="
preserve
">vel 6. </
s
>
<
s
xml:id
="
echoid-s2415
"
xml:space
="
preserve
">pedũ. </
s
>
<
s
xml:id
="
echoid-s2416
"
xml:space
="
preserve
">Huic
<
lb
/>
ſuperimpone per pinnulam inſtrumentum pręſcriptum,
<
lb
/>
poſito´q; </
s
>
<
s
xml:id
="
echoid-s2417
"
xml:space
="
preserve
">indice ſuper linea diametrali ipſius inſtrumenti,
<
lb
/>
verte ipſum inſtrumentũ cum indice eouſq;</
s
>
<
s
xml:id
="
echoid-s2418
"
xml:space
="
preserve
">, quò per in-
<
lb
/>
dicis perſpicilla videas locũ dimetiendũ: </
s
>
<
s
xml:id
="
echoid-s2419
"
xml:space
="
preserve
">fixo itaq; </
s
>
<
s
xml:id
="
echoid-s2420
"
xml:space
="
preserve
">inſtru-
<
lb
/>
mẽto, verte indicem ad alterum diametrum tranſuerſum
<
lb
/>
(ipſum enim inſtrumentũ duobus diametris diſſectũ eſſe
<
lb
/>
debet) & </
s
>
<
s
xml:id
="
echoid-s2421
"
xml:space
="
preserve
">recede in latus ad eam partẽ quam index indicat
<
lb
/>
ad certam aliquam diſtantiã, quę quãtò maior fuerit, tan-
<
lb
/>
to certior erit operatio. </
s
>
<
s
xml:id
="
echoid-s2422
"
xml:space
="
preserve
">Hic iterum fige fuſtem vel bacu-
<
lb
/>
lum, cui ipſum inſtrumentũ per pinnulam primũ leuiter
<
lb
/>
impone, deinde indice poſito ſuper diametro tranſuerſo
<
lb
/>
ipſius inſtrumenti, verte inſtrumentum cum indice ſuper
<
lb
/>
linea ſua manente, quouſq; </
s
>
<
s
xml:id
="
echoid-s2423
"
xml:space
="
preserve
">per ipſius foramina priorem
<
lb
/>
baculum aſpicias ꝗ̃ rectiſſimè, atque ita ipſum inſtrumen
<
lb
/>
tum firmiter baculo affige. </
s
>
<
s
xml:id
="
echoid-s2424
"
xml:space
="
preserve
">Dehinc verte indicem, vt per
<
lb
/>
ipſius perſpicilla rem dimetiendã videas, atq; </
s
>
<
s
xml:id
="
echoid-s2425
"
xml:space
="
preserve
">hic diligen-
<
lb
/>
ter nota partes ſcalæ Geometricæ per ipſum indicẽ abſciſ
<
lb
/>
ſas, quas memoriæ vel tabellæ manda. </
s
>
<
s
xml:id
="
echoid-s2426
"
xml:space
="
preserve
">Quibus actis, ſi di-
<
lb
/>
ſtantiam inter duos baculos duxeris in omnes partes ſea-
<
lb
/>
læ, quæ ſunt ferè in omnibus. </
s
>
<
s
xml:id
="
echoid-s2427
"
xml:space
="
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">12. </
s
>
<
s
xml:id
="
echoid-s2428
"
xml:space
="
preserve
">& </
s
>
<
s
xml:id
="
echoid-s2429
"
xml:space
="
preserve
">productum hinc nume
<
lb
/>
rum per partes ſcalę per indicẽ abſciſſas diuiſeris, prodibit
<
lb
/>
loci vera diſtantia. </
s
>
<
s
xml:id
="
echoid-s2430
"
xml:space
="
preserve
">Verbi gratia, ſit in ſequẽti figura locus
<
lb
/>
dimetiendus, a. </
s
>
<
s
xml:id
="
echoid-s2431
"
xml:space
="
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">b, verò ſignum ſtationis primæ, à quo in latus ſecun-
<
lb
/>
dum angulum rectum diuerto ad c, vbi index abſcindit duas partes
<
lb
/>
ſcalæ. </
s
>
<
s
xml:id
="
echoid-s2432
"
xml:space
="
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">Diſtantia verò inter b, & </
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>
<
s
xml:id
="
echoid-s2433
"
xml:space
="
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">c, ſit. </
s
>
<
s
xml:id
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echoid-s2434
"
xml:space
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">200. </
s
>
<
s
xml:id
="
echoid-s2435
"
xml:space
="
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">pedũ. </
s
>
<
s
xml:id
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echoid-s2436
"
xml:space
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">Duco igitur. </
s
>
<
s
xml:id
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echoid-s2437
"
xml:space
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">200. </
s
>
<
s
xml:id
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echoid-s2438
"
xml:space
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">in. </
s
>
<
s
xml:id
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echoid-s2439
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xml:space
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">12.
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lb
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</
s
>
<
s
xml:id
="
echoid-s2440
"
xml:space
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">prodeunt. </
s
>
<
s
xml:id
="
echoid-s2441
"
xml:space
="
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">2400. </
s
>
<
s
xml:id
="
echoid-s2442
"
xml:space
="
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">quæ diuido per. </
s
>
<
s
xml:id
="
echoid-s2443
"
xml:space
="
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">2. </
s
>
<
s
xml:id
="
echoid-s2444
"
xml:space
="
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">fiunt. </
s
>
<
s
xml:id
="
echoid-s2445
"
xml:space
="
preserve
">1200. </
s
>
<
s
xml:id
="
echoid-s2446
"
xml:space
="
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">pedes inter 2, & </
s
>
<
s
xml:id
="
echoid-s2447
"
xml:space
="
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">b, qui
<
lb
/>
ſunt. </
s
>
<
s
xml:id
="
echoid-s2448
"
xml:space
="
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">240. </
s
>
<
s
xml:id
="
echoid-s2449
"
xml:space
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">paſſus, vel ſtadium vnum &</
s
>
<
s
xml:id
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echoid-s2450
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xml:space
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">. 115. </
s
>
<
s
xml:id
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echoid-s2451
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xml:space
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">paſſus.</
s
>
<
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echoid-s2452
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</
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116
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<
head
xml:id
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echoid-head128
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style
="
it
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xml:space
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">¶ DVOBVS VEL TRIBVS VISIS LOCIS,
<
lb
/>
quomodo per angulos poſitionum rectæ eorum diſtantiæ ſint inuenien-
<
lb
/>
dæ, etiam ſi in nullo eorum præſens ſis. Et qua ratione facillimè
<
lb
/>
regio deſcribi poſsit ex ipſis, abſq; nautico Compaſſo, aut
<
lb
/>
line æ meridianæ obſeruatione. CAP. V.</
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