Full text: Zubler, Leonhard: Fabrica et vsvs instrvmenti chorographici

FABRICA ET VSVS tam pedem, in medioq́ue paxillum vel cuneum prominen
tem circiter pollicem, qui Aſſeri inſeri, hicq́ueillo circum-
moveri poſſir.

5.1.

Aſſer.
Fulcrum.

Perpendiculum porrò, ex filo & plumbo fabrefactum, ful-
cro huic affigito, quo Aſſer perpendiculariter ſemper eri-
gatur ac ſiſtatur.

5.1.

Perpendi-
culum.

Regulam etiam conficito, binos circiter pedes longam. ſumptis tunc duabus Acubus bene minutis, earum unam
Regulæ extremitati, litterâ B notatæ infigito cerâ, vel alio
modo, quæ una erit dioptra: alteram verò im pingito extre-
mitati A. in Regulâ, eritq́ hæc altera dioptra.

5.1.

Regula.
Acus.

Vſurus igitur Inſtrumento ſedulò operam da, ut id per-
pendiculare ſemper ſit, etiam in inonte te exiſtente, indeq́; pagos vel domos in valle ſitas, deſcribere volente. Aliter ſe
habet, ſi Aſſere diſtantiã montis à pago aliquo, in valle ſito,
mȩſurare velis. Nam etſi Aſſer tunc inclinet verſus pagum,
nihil intereſt.

Circino præterea; eoq́ue quàm exquiſitiſſimè facto, o-
pus eſt, quo lineam notam, quæ linea ſi [?] ationalis vocatur, & explorandæ longitudini & latitudini ſervit, poſſis metiri.

5.1.

Circinus.

Scalam item menſoriam fabricator: quam dividito in par-
tes 100. vel 1000. vel etiam plures, pro datâ ſcilicet longi-
tudine vellatitudine: reperiesq́ue in hac, mediante Circi-
no, quot ad ſtationem tuam perticas vel pedes ſum-
pſeris, & quæ proinde ad loca da-
ta ſit diſtantia quæ-
ſita.

5.1.

Scala men-
ſoria.

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