Pin Hole man was discovered in 1928 by the archaeologist A . L . Armstrong, who described the engraving as " a masked human figure in the act of dancing a ceremonial dance " ( Armstrong 1928, p . 28 ).
22.
At the apex where the two graduated straight sides of the grid pattern meet in a right angle there is a pin hole with a cord in it and a small weight on the free end with a small bead that slides along the cord.
23.
These instruments, with poor angular resolution, not principally intended to function with stars at night, as an astronomical measuring device, since it is impractical to sight a star through the front pin hole ( aperture ) less on a fixed, stabilized mount relative to the half degree width of the very intense Sun.
24.
The FAA was planning to give 737 operators 60 days to conduct the wiring inspections but changed the order to a " telegraphic, " emergency airworthiness directive after learning earlier this week that mechanics working on a Continental Airlines 737-200 fuel leak discovered pin holes in a wire conduit running through one of the plane's wing fuel tanks.
