The boy's own book of indoor games and recreations : a popular encyclopædia for boys (1890)
Stables, Gordon, 1840-1910, Hutchison, George Andrew, 1841-1913 · Philadelphia : J.B. Lippincott · leaf 356
ake the length equal to the differencebetween 90 deg. and the latitude of the place(that is, not as in the horizontal dial, the lati-tude, but the complement of it). Taking London as the place, take from thescale 38J deg., which is the difference between90 and 51J deg. This distance must be marked… … Fig.$ 352 HOW TO MAKE A SUNDIAL. oclock, and are numbered backwards, or from left to right as in Fig. 5. The styleis made as for the horizontal dial, but the angle c a b is to equal 38J deg. in thecase of London, or the complement of the latitude. The base a d is to equal thelength of the…
Games · Amusements
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