Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 644
622 VAN NOSTRAND'S ENGINEERING MAGAZINE. the first curve corresponds to B on the To change P I to P' F, not setting up second. at P' I', when it is inaccessible to the in- Nothing is limited in this problem but strument or chain, or there are obstruc- the length of the chord A' B. tions to… … The instrument remaining at P I, we To terminate a curve that shall pass its form an isosceles triangle ; the distance tangent near a distant point B1, B B' or P I to P' I' being one side, the other de- G B' being estimated by the eye : termines B on the tangent to P' P. De- Denote by n the number…
Engineering
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