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Bausch & Lomb 1908 catalog of Engineering Instruments
But in every particular, and point of detail, this transit surpasses the transits commonly sold today at a higher price. The construction is of the most improved type, hard bronze being the metal employed. The centers are long, all fittings are accurate, and the graduations are of extreme precision.
Our continuous variation plate, and the sensitive levels with graduations on the vials, are included, as in our other transits. The plate levels are adjustable from without, but are mounted within the com pass box for protection. The telescope is of erecting pattern, with standard eyepiece. However, our patented variable power eyepiece may be substituted if desired.
The finish of the instrument is both durable and handsome, and where price is a primary consideration, the 5 inch transit No. 36 seeks its peer. An instrument at this price duplicating the efficiency and offering the same advantages possessed by the No. 36 has never been produced.
The telescope level is 4 1/2" in length and is graduated in 2 mm. divisions, each division representing 20" of arc. The plate levels are also graduated in 2 mm. divisions, each division being sensitive to 6o" of arc. The telescope axis carries a center-point which is exactly over the center when the instrument is leveled up and the telescope is horizontal. The axis is also provided with clamp and tangent screw. The range of the shifting center is 1/2". The four German silver leveling screws are provided with dust-caps.
The instrument is 11 1/2" in height and weighs approximately 13 1/2 lbs. The approximate weight in carrying case is 23 1/2 lbs., and when ready for shipment 37 lbs. The ordinary tripod weighs about 8 3/4 lbs., and when packed 23 lbs. The extension tripod weighs 10 lbs., and when ready to ship 24 1/2 lbs.
|Cat No.||Description||Price||36||5" Transit, as specified, including vertical arc, level to the telescope, clamp and tangent screw, and split-leg tripod . . . . . . . . . . . . . . . . . .. .||180.00|
|38||5" Transit, as above, but without vertical arc . . . . . . . . . . . . .||165.00|
|39||5" Transit, without vertical arc, level to telescope and tangent screw . . . . . . . .||145.00|
|Gradienter, for 5" transit . . . . . .||5.00|
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