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Re: Trombone Kamal Prototype
From: Greg Rudzinski
Date: 2009 Jun 5, 13:06 -0700
From: Greg Rudzinski
Date: 2009 Jun 5, 13:06 -0700
For piloting and moon/venus observations use clear plex instead of white. Tape, etch, and ink reference lines into the clear plex the same way as for the white plex. On Jun 3, 10:52�am, Greg Rudzinskiwrote: > --- On Wed, 6/3/09, Greg Rudzinski wrote: > > > From: Greg Rudzinski > > Subject: TROMBONE KAMAL PROTOTYPE > > To: gregrudzin...@yahoo.com > > Date: Wednesday, June 3, 2009, 10:46 AM > > The Trombone Kamal gives the 9th > > century Kamal a 20th century facelift. > > > How to make your own. > > > Materials: > > - 3.5 x 5" x 1/8" white plex which is transparent enough to > > see a faint image of the sun through it at low altitudes. > > > - Standard metal tape measure. > > - Electrician tape (black). > > - Scotch tape (clear). > > - Black felt tipped pen. > > > 1. Lay a strip of electricians tape along the 3.5" base of > > plex. This will be the horizon reference line. > > > 2. Using a black felt tipped pen precisely draw in lines > > spaced 1", 2", and 4" above the electrician tape horizon > > reference. > > > 3. Place clear scotch tape over black lines to fix and > > protect from smudging. > > > How to use. > > > � ���Place the metal tape measure end > > centered just below the horizon reference. Hold in place > > with index finger and thumb then trombone the tape measure > > out until pressed below the eye. Adjust the tape measure in > > or out until the sun and horizon are bracketed by reference > > lines. The hs altitude will be the inverse tangent of 1", 2" > > or 4" over the tape measure reading. A K&E 4080-3 10" > > slide rule works well for this calculation. > > � ���Relative bearings, doubling the > > angle on the bow, and distance off by vertical angle are > > piloting applications that can also be performed by the > > Trombone Kamal. > > > � � � > > �IMG_4414.JPG > 629KViewDownload > > �IMG_4415.JPG > 980KViewDownload --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---