STANDARD - Survey Instrument Antique Center!

5^"
164
C. L. BERGER & SONS, BOSTON
ENGINEERS' AND SURVEYORS' TRANSIT*
A Standard Size of less weight than transit No. 1, but larger than size No. 2.
The^ telescope 1
has nearly the same power as No. 1 Erecting and when made
Inverting" is more powerful.
The outer or contra clockwise row of figures on the horizontal circle and
those of the verniers of the right side of verniers A and B can be furnished in Red
but will be made to order only, see cat. page 41. Instrument stands upright in
carrying case.
Transit, Size No.
SPECIFICATIONS :
Horizontal circle 5 1
/-iiieh (at edge of graduation), graduated on heavy
ring of solid silver, double opposite verniers, read to minutes, two rows of
figures to 360 in opposite directions; figures inclined in the direction verniers
should be read, verniers at 30 to line of sight.
Vertical circle 5-inch, graduated on solid silver, double verniers read to minutes,
between legs of standard, and Aluminum Guard.
Telescope lOM-incll, objects erect, f aperture 1 14 inch, power 2O dia.
Stadia wires, fixed, in ratio 1 :100.
Spirit-level 5!4-inch, with clamp and tangent screw to telescope.
Plate-levels of standard length and very sensitive.
Magnetic needle 3!-inch, edge-bar form. (See pages 98-99.)
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.
Transit leatheri zed (see page 9). All important parts treated in our durable
and handsome leather finish.
Full length split-leg tripod.
The Mahogany case has a leather strap, hooks, etc. It contains a sun-shade,
a wrench, a screw-driver, an adjustable plumb-bob, a magnifying glass, an ad-
justing pin, and weighs about 7 Ibs.
Weight of transit about 13 Ibs.; weight of tripod from 9 to 9}/ Ibs.
Gross weight of transit packed securely for shipment in two boxes, about 55 Ibs.
Code Word, Cakula. Made to order only. Price $252.OO
as above, with a 5-inch Arc in place of a full Vertical Circle.
Code Word, Cagana. Made to order only Price, $243.OO
Transit as under Cagana, but without arc.
Code Word, Cadagon. Price, $223.OO
........
Extras to Transit No.
Graduation of Horizontal Circle, reading to 30" ....
Gradienter attachment . . . .
Offsetting arrangement
Variation Plate, adapted for all declinations E. or W. ....
Extension Tripod, in addition to the split-leg tripod furnished with the transit
Plain Prism, with colored glass, for observing the sun's altitude (fig. 7), page 175
$10.00
5.00
10.00
19.50
8.00
Improved Prism, with colored glasses, for observing the sun's altitude (fig. 5), page 175 . 12.00
Davis' Solar Attachments, screen with improved prism mounting (page 175)
Berger's Solar Attachment (small) (pages 172 and . . . 173) 52.00
"
Latitude Level Attachment . .
Short Focus Lens Attachment (see pages 101 and 203) . . . One
15.00
Leather Cover over case arranged to be strapped to a saddle of a horse
" " " " as above with shoulder straps ......
$8.50, pair 16.00
Cravenette hood (heavy, gives good protection) silk (light, not waterproof), each .
Bottle of fine watch oil, for the centers, etc., of transit . .
- 0.35
*Unusual size; see our No. 5 1
/? Monitor Transit, pages 166 and 167.
fAn Inverting Telescope of 1W aperture, lO'/a" long, power 23 dia. can be supplied
with the above transit in place of the regular erecting one at no additional cost. This telescope is
particularly well adapted for stadia work. Made to order only.