Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor (1866)
Worthen, William Ezra, 1819-1897, [from old catalog] ed, Appleton, firm, publishers, New York. (1866. D. Appleton & co.) [from old catalog] · New York, D. Appleton and company · leaf 557
3.23 CO -(5)-3.54 p4 -i^y- 2.22 CO -(3)-1.29 12; 2.78 f4 COFig. 22. 22 represents the field notes of a survey by compass. Fig. 23 aplot of tlie same, witli the position of tlie protractor in layingoff the angles. In this way of plotting, a meridian is laid offat the intersection of each set of… … Fis. 23. letters of the bearing are alike, that is, both I^. or both S., and the last let-ters also alike, both E. or both W., the angle of deflection C B B will bethe difference of the bearings, or, in this instance, 20°.
