A very necessarie and profitable booke concerning nauigation, (1584)
Taisnier, Jean, 1508-approximately 1562 · Imprinted at London : By Richarde Iugge. · leaf 30
The vertue of the Lode ſtonè. Magnes, in this maner. Bake a holowe cale of fpluer, after the fathion ok a concaue glalle, outwardly laboured with curious art of grauyng, not onelp foz oꝛnament; but allo for lyghtneſle, fo? the lyghter that it is, ſo much the moze caliper thal it be maoued⸗ nepther… … Se matt haue on the inner (pve certayne lide naples x dent: tles oꝛ final teeth of iron or one equal weyght, to be fattened on p boꝛder oꝛ margent, fo that the one beno further diſtant from the wheele allo mut be in all partes or equal weyght, chen fatten the Exiltree in the myddeſſ, pon che whiche…
