[Chaos-l] Manual Setting Circles with a Digital Protractor?

[Mark South]

Hi, I'm thinking of manually setting circles with my  15" Truss  
Discovery Dob and I have the Planetarium Program to give me up to the  
minute Alt/Az readings.(yes, I'm a die-hard starhopper, but I think  
sometimes it would be fun to do)... Most folks make their own circles  
for the base Azimuthreadings. Some use a digital inclimator for the  
Altitude which is quite accurate, but this is based on gravity.

see: http://www.amazon.com/M-D-Building-Products-92346-SmartTool/dp/ 
B0000225AL/ref=sr_1_2/002-9920927-7912819? 
ie=UTF8&s=hi&qid=1183940825&sr=1-2

I was thinking... I would really like to avoid a hand-made circle.   
I'm lazy.  :)

I wonder if a digital protractor would work for the horizontal  
Azimuth for a full 360 rotation. Has anyone every tried to do this?

Digital Protractors:

http://www.smarttooltech.com/category.php?category=1

cheaperversion:

http://www.amazon.com/o/ASIN/B000BD7ADQ/ 
ref=s9_asin_title_1-1966_g1/002-9920927-7912819? 
pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-3&pf_rd_r=09E7B98KAHMK16QH2YKQ&pf_r 
d_t=101&pf_rd_p=288448601&pf_rd_i=507846

Topic about setting circles manually:

http://www.homebuiltastronomy.com/ManualDobSettingCircles.htm

Thanks,
Mark South
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