Navigation training guide.

[cover]
CAPTAIN RUGG’S STAR DIAGRAM.
SIDEREAL & PLANETARY OBSERVATION MADE EASY
PRICE 6/-
FORSTER GROOM & CO., 15, CHARING CROSS, LONDON.

Opens to reveal:
Diagrams, volvelles, with printed instructions.
Showing which stars and planets will be on an observer’s meridian at a particular time

‘DESIGNED BY CAP.T W.G. RUGG / Teacher of Navigation, Trigonometry and Seamanship, NAUTICAL SCHOOL, 703, Commercial Road, London, E.’

Includes various tables for 1898/9