Thus the time stands all ready computed to any child who is able to read the time of day from the face of an ordinary clock.

or the corresponding fractional parts of an hour be it more orless. Next look at your own pocket time or clock, and if it be just eleven oclock move the arm G to eleven and the arm H, will still retain its relative position to arm G, (as the two arms are held to each other by friction) and indicate six p. You have now got the absolute corresponding difference of time between New York and London, which is five [00 hours in round numbers. In order to ascertain the time of day or night, in any part of the world, corresponding to your own meridian time first: place the lower indicating arm, G',into the center socket 0 or receptacle, letting the graduate edge of the arm be in line on your own meridian time, for instance if it be New York, which is the fifteenth meridian: Now you wish Londons corresponding timez-Place the arm H, on 5 the meridian of Greenwich, which is London, and marked, F, atthe same time holding the arm G in its place. G09B29/00- Maps Plans Charts Diagrams, e.g.G09B- EDUCATIONAL OR DEMONSTRATION APPLIANCES APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE MODELS PLANETARIA GLOBES MAPS DIAGRAMS.

G09- EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS.

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