Hi everyone: I am working on a dial with a large declination similar to the one on page 99 of Waugh's book but lat.40.17, long. 76.43, and faces S. 84.6 W. I am having trouble understanding completely the meaning on page 146 on the difference in longitude so I can plot the points for the lines of declination. What is the meaning of the sentence " The difference in longitude tells us that the dial would be horizontal at a longitude 28.0d father east ( since the decl. is east) or at a long. 44.8dW" ?? What would be the longitude of the horizontal dial for my west dial? My dial height will be 1.7 inch which is suppose to be 23.2 inches from the dial center. My SD=49.7, SH=4.1, DL=86.5 I still like using the calculator so I understand the math. I do not know if I am using the right altitude. I though I understood this.!
Thanks in advance. Ken Clark
