Apian, Petrus, Instrvmentvm Sinvvm, sev primi mobilis

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30GENVINVS VSVS
Hæcigitur ſufficiãt de ingreſsibus tradita. Reſtat ut generali quadam methodo doce
am, quomodo uſus centum ſubſcriptos per quadrantem quo hunc conſequi ualeas, cõ
fiat autem id duabus regulis, quarum prima eſt.
REGVLA PRIMA.
Quotieſcun hoc in libro dicitur fieri oportere diuiſionem, hanc´ per ſinum inte-
grum ſiue perfectum, Toties putãdum eſt operationem eandem in qua drante exigi poſ
ſe per lateralem introitum.
REGVLA SECVNDA.
Quoties multiplicationẽ fieri per ſinum integrum ſiue perfectũ contingit, toties o-
perandum eſt arealiter in quadrante, ueluti per totum opus in paginarum marginibus
paſsim indica mus, nunc arealem, nunc lateralem ingreſſum hortantes.
TALIS AD VSVM QVADRANS ADORNARI
debet quantuſcun ſit.
9[Figure 9]

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