STANDARD - Survey Instrument Antique Center!

No. lib.
214
Complete Double Opposite Vernier Attachment to 5-incb Vertical
Circle, with Level, Reading Glasses and reversible
Tangent Screw to vernier frame.
Attachable to Plain Transit-Theodolites No. 11, page 212 and lid.
NOTE. The telescope in the above cut has no level attached to it, as is frequently the case in
these instruments, and in consequence the vernier frame of vertical circle carries a 3-inch level by
which a complete control of the position of its verniers is assured when vertical angles are measured.
For price and particulars see Extras to Plain Transit-Theodolite No. 11,
page 212.
Triangulation Transit- Theodolite.
For use in Cities, by Colleges, and in Bridge and Tunnel Construction.
No. lid. Plain Transit-Theodolite with three leveling screws, as in
cut on opposite page, but without reading glasses to horizontal circle, also without
level, clamp, tangent screw, vertical arc and striding level to telescope. Yoke
standard frame is of aluminum and of pattern shown in No. llg.
Specifications :
Horizontal circle 6^-inch, single opposite verniers (as in fig. 5, page 38) reading
to 2O", glass protected graduation and verniers, one row of figures to 360 clockwise;
1
12-inch inverting telescope, aperture 1^-inch, power 28 diameters, achromatic eyepiece
; telescope is reversible over the bearings and through the standards ; long compound
centers of hard bell and phosphor bronze metal; shifting center (see page 52).
Mahogany box contains reading glass, screwdriver, wrench, adjusting pins, etc.
Made to order only.
Code word, Mobeda.
"Weight
of instrument about 14 Ibs.
" *'
tripod about I3 l/z Ibs.
Gross weight, securely packed in two boxes for shipment, about 60 Ibs.
Price of Plain Transit-Theodolite No. lid, with three leveling screws,
as described above $245.OO
For Extras to Plain Transit-Theodolite No, lid see Extras to Plain
TiAnsit-Theodolite No. 11, page 212.