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# Title: Leibniz-Handschriften zur Mathematik LH 35, 12, 1
# Folio 281v, page id 00068194:0562
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Ex hoc itaque fandamenta sane novo inveniri potest instrumentum
unum idemque, in quo mutatis tantum magnitudinibus quarundam
rectarum in describendo constantium, sive mutatis partium
instrumenti intervallis: omnes Ellipses, Hyperbolae, parabo la
si velis etiam circuli et rectae describi possint. Et hac
arte fore describi poterunt Conicae, quarum faci longissime absius
exignis licet instrumentis Et credo ex eo fundamento
etiam Ottii pendere instrumentum
Ut ad circulum applicetur esse debet: a - C 1. sive a
sive  a =c H a sive C infinites parva. Atque ita
fier sed ita A. fier circuli centrum. Licet hoc ergo
dare non possit, quae sperari jussit ottius. habemus tamen
justrumentum omnium opinor commodissuumus ad usum communem
pro Conicis describendis.
videndam an matetur calculus sipro A cy ponamus
a y. vel aliter. Item an licett efficere ut E F tronseat
per A
ret portiones conicamus describantur, et si earum foci longissime
absint ahc ad instrumento; commodissime obtinebitur ope Coni.
seor tunc pro circulo opus erit sectione con non bati parallela, sed
sub contraria. Aode interim, quae mihi de Circulo attulio Perraultius