THE SAEGMULLER ATTACHMENT
As seen in the engraving on the
opposite page, it consists essentially of a small telescope and level,
then telescope being mounted on standards, in which it can be elevated
or depressed. The standards revolve around an axis, called the polar
axis, which is fastened to the telescope axis of the transit instrument.
The telescope, called the "Solar Telescope," can thus be move
in altitude and azimuth. Two pointers, attached to the solar transit to
approximately set the instrument, are so adjusted that when the shadow
of the one is thrown upon the other the sun will appear in the field of
view. -from A Treatise on Plane Surveying, by Daniel Carhart, C.E.,
NY: Ginn & Co., 1887.