Capricorn: Dec.22-Jan.29 The Sundial Primer
created by Carl Sabanski
Capricorn: Dec.22-Jan.29

The Sundial Primer Index

CAD Sundial Creations - Mac Oglesby - Azimuth of Sun Meter

This useful device designed by Mac using DeltaCad is shown in Figure 1.

Figure 1: Azimuth of Sun Meter

Figure 1: Azimuth of Sun Meter

The following information about the design and use of this device was provided by Mac.

"Here's a useful device for measuring the azimuth of the Sun and for helping determine the declination of a wall.

This protractor was drawn in DeltaCad without any assistance from QB (Quick Basic) or any dialing programs. I thought it might be an interesting illustration of a sundial related drawing created from scratch.

I mounted a printout onto smooth, dense particle board and inserted a 1/8" stainless steel post at the center. Of course, it reads the sun's declination directly if the device is positioned with the long arrow aimed true south. But I've found it more useful when the device is held, level (I use a bubble level), with the edge opposite the arrow against a vertical wall. I then read the angular direction to the sun relative to the direction the wall faces. With the time noted, I can use The Dialist's Companion (or my own spreadsheet) to get the azimuth of the sun at the time of the measurement. I try to take several readings and average the results. To reduce confusion, I usually make little sketch maps of the wall, sun, and south.

Note that the lines on the .dc file are in different layers, making it easy to turn off or adjust the thickness of various sets of lines. The device I use doesn't have the inner 1 degree lines because it looked too crowded."

If you would like Mac's DeltaCad drawing file or a pdf file with the drawing of the meter you can get them both here

Happy Dialling!