The circles of proportion and the horizontall instrument. Both invented, and the vses of both written in Latine by Mr. W.O. Translated into English: and set forth for the publique benefit by William Forster [microform]
- London : Printed [by Augustine Mathewes] for Elias Allen maker of these and all other mathematical instruments, and are to be sold at his shop ouer against St Clements church with out Temple-barr, 1632.
, 152,  p.,  leaves of plates : ill. (woodcuts)
- Early English books, 1475-1640 ; 1322:17.
Early English books, 1475-1640 ; 1323:1.