Platinotype print of plate of Backstaff, from Davis's "Seaman's Secrets", 1607, reprint in Hakluyt Society's volume series, vol LIX, p.334 Platinotype print of plate of Backstaff 1914
Platinotype print of plate of quadrant, from "Margarita Philosophica" 1535, p. 1345 Platinotype print of plate of quadrant 1914
Platinotype print of plate of backstaff, from Davis's "Seaman's Secrets", 1607, reprint in Hakluyt society's volume series, vol LIX, p 332 Platinotype print of plate of backstaff 1914
2 Platinum prints shewing Egyptian "Shadoufs" raising water in 3 lifts Platinum prints sh0wing Egyptian "Shadoufs"