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--- On Wed, 6/3/09, Greg Rudzinski  wrote:

> From: Greg Rudzinski 
> Subject: TROMBONE KAMAL PROTOTYPE
> To: gregrudzinski@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.
> 
> 
>       


      
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