Folio (385 x 237 mm). Engraved diagrams on N2r and Q1r. Woodcut diagrams throughout, including several full-page, the diagrams on ã1v, G1r, H1r, K1r, K2r, R1v and S2v with volvelles or attachments (several detached, lacking overslip on E2r), the diagram on R1v printed on an overslip and pasted in. Compass printed on vellum laid in at N1r.
(A few leaves wrinkled and frayed, a few small holes or tears affecting text and images, dampstaining, marginal chipping, some soiling.)  Contemporary vellum (defective). Provenance: J. D. Labarre (early signature on title-page); a few early manuscript annotations. 

FIRST EDITION OF CAUS' RARE WORK ON SUNDIALS, inspired by the work of Vitruvius, and including the dissertation on the 35th proposition of Euclid following the dedication. RARE: according to American Book Prices Current, only 4 copies of this work have appeared at auction in the last 45 years, each with varying numbers of volvelles present, and most defective.  Berlin Kat. 1745; Brunet I:1691. Sold not subject to return for lack of any movable volvelles.