A discours of the variation of the cumpas, or magneticall needle. : Wherin is mathematically shewed, the maner of the obseruation, effectes, and application thereof, (1581)
Borough, William, 1536-1599 · [London] : Imprinted at London for Richard Ballard, and are to be solde at his shop at Sainct Magnus cornar in Themes streate · leaf 65
of the Cumpas. tobtcl) ITjaU be eafp foj tlje meaneft rapacttt'es to cmtcciaej a»o feme maje effectually hi life , tljen ifj Gjould Ijauc cjtpjefirtr fbc fame bp multitudes of rules m lujttpna; 4 djerefojefoj! tin's matter 31 referrepou to tlje fame s t^e tuljicbe pent n>al£ ioohe foj berp flmjtlp,… … Ccattfe 3! fjauefoutid tome imperfections in tlje firif 3Inft ranwnt foj tbe 23ariation(&i!}ic&e non»ttlj8ani opug doetlj facre ejccell tlje Cumyalfes cf gtariacton tjevctofoje bled to? dm purpofe) 31 ijaue fecrefetdotone tlje fojme of a nctee 31»tfruinem , tnljeretn all feruyle of douttst and…
Compass · Nautical astronomy · Imprint 1581
Internet Archive · John Carter Brown Library · Public domain (published before 1931). Free to use for anything.
![An illustration from Georgii Agricolae De re metallica : libri XII. Quibus officia, instrumenta, machinae, ac omnia deni[que] ad metallicam spectantia, non modo luculentissimè describuntur, sed & per effigies, suis locis infertas, adiunctis latinis, germanicis [que] appellationibus ita ob oculos ponuntur, ut clarius tradi non possint. ; Eiusdem De animantibus subterraneis liber, (1556)](https://img.insideoutlibrary.com/img/200/ia-gri_000033125008455038-120-70.webp)
