STANDARD - Survey Instrument Antique Center!

182
The 4" Mountain,
Mining and Reconnoissance Transit.
The smallest Transit made by us.
The CUt represents a complete transit of this class, in every respect similar to our Engineers'
and Surveyors' large transits No. 1 and No. 2, except in size and weight. The
verniers of the horizontal circle are placed at 35 to line of sight, unless ordered to be
at 90, when the transit must be specially made. The instrument has compound centers
and is as carefully made as the larger ones, and with careful use, necessary only on account
of its great lightness,* capable of very accurate results. For use in mines, mountains
and for explorers, travelers and for preliminary work of all kinds, as well as to
fill in details, it is especially adapted. Owing to the small size of telescope and high
power, we supply the inverting kind. The instrument is packed lying down.
Transit No. 4 SPECIPICATION S: -
Horizontal circle 4-inch, graduated on heavy inlaid ring of solid silver, double opposite
verniers reading to minutes, two rows of figures to 360 in opposite directions, figures inclined
in the direction verniers should be read, verniers at 35 to line of sight.
Vertical circle 4-inch graduated on solid silver, double verniers reading to minutes.
Telescope 7%-inch, objects inverting, aperture I'/s inch, power 18 dia.
Stadia wires, fixed, in ratio 1:10U
Spirit level 4-inch, with clamp and tangent screw to telescope.
Plate levels both of standard length and very sensitive.
Magnetic needle 2%-inch edge-bar form having no index error.
Shifting center, to set instrument exactly over a given point.
Punch mark on top of telescope, to enable to center the transit from a point above.
Standards metal finish.
Extension tripod.*
The Mahogany case has a leather strap, hooks, etc. It contains a sun-shade, a wrench, a screwdriver,
an adjustable plumb-bob, a magnifying glass, an adjusting pin, and weighs about 4 Ibs.
"Weight of transit about 5 Ibs. ; weight of extension tripod about 9 Ibs.
Gross weight of transit packed securely for shipment in two boxes, about 45 Ibs.
Code word Genista. Price, $247.OO
Mountain, Mining and R. Transit No. 4, as above, but
with arc only in place of full vertical circle and guard.
Code word, Galanthus. Price, $238.OO
Extras to Transit No. 4.
Gradienter attachment
$ 5.OO
Variation plate to set off all declinations E. or W 1O.OO
Prism and colored glass (plain form only permissible, Fig. 7, page 175) 8.OO
Reflector for illuminating the cross wires
4.OO
Short focus lens, pages 101, 203, one
8.5O
Edge graduation for vertical circle, with a double vernier at eye end, page 198 . . 35.OO
Edge graduation for vertical circle, with double opposite verniers, page 198 . . . 45.OO
Patent interchangeable auxiliary telescope, style I, page 189 . . STf.OO
Berger solar attachment with small telescope, page 172
52.OO
Split-leg tripod in addition to extension tripod furnished with the transit .... 16.5O
Bracket in box, page 203
14.OO
Trivets, page 204
Lateral adjuster, page 205
25.OO
Leather cover with shoulder straps
12.5O
"
without " " 10-50
Hood to protect transit from rain and dust
l.OO
-35
Bottle of fine watch oil .
* We furnish with this instrument a heavy extension tripod, such as furnished with transit size No. 2.
This secures to the transit the necessary great rigidity and stability. However, when required, we
can furnish an extension tripod weighing 7 Ibs. only (price being the same), in place of the 9M Ib.
tripod, or in addition if desired for special purposes. We can also furnish the stiffer split-leg tripod
weighing only 73^ Ibs. in place of the extension tripod. This we recommend very strongly whenever
appl
ipplicable.