CK, ETC.

On page 10 is shown an illustration of our standard high grade type of 6
in. equatorial. A description of the same will apply to practically all
larger and smaller sizes.

The pillar is of rectangular cross section and well proportioned. The clock
case is securely fastened to the top of the pillar but with provision for
adjustment in azimuth. The clock has ample driving power, is very carefully
constructed and regulated by friction governor (Design Prof. Young.)
Maintaining gears are provided on the main shaft which allows the winding
of the clock without retarding motion. Worm wheel and worm are carefully
cut, and protected by brass shields. Right ascension and declination
circles have fine graduation on solid silver and coarse finding graduation
on the edge. Electric illumination and magnifying glasses are fitted to the
verniers. The handles for all clamps and slow motions are fastened
conveniently near the eye end of the telescope and are of different shape
so as to distinguish in the dark right ascension and declination. The axes
are of tool steel carefully fitted to their bearings, and on the larger
instruments friction rollers are fitted to the polar axis. The telescope
tube is made of steel, light but strongly constructed. The eye end has long
and heavy rack and pinion motion and the whole can be easily removed.

#Note.#--The fine divided circles are often omitted on smaller equatorials,
as they are not essential, the electrical illumination for the circles is
also left off, and this will amount to a material saving.

#A130. Equatorial Mounting with 5 in. Telescope.# According to above
description with first class objective, and five eye pieces.
Price #$950.00#

The same instrument without fine circles and electrical illumination.
Price #$825.00#

#A131. Equatorial Mounting with 6 in. Telescope.#
Complete as A130. Price #$1500.00#

#A132. Equatorial Mounting with 8 in. Telescope.#
Same as above. Price #$2500.00#

#A133. Equatorial Mounting with 9 in. Telescope.#
Same as above. Price #$3300.00#

#A134. Equatorial Mounting with 10 in. Telescope.#
Same as above. Price #$3700.00#

#A135. Equatorial Mounting w