A fine and impressive 8-inch Troughton & Simms transit theodolite, English, late 19th century,
Lot 106
A fine and impressive 8-inch Troughton & Simms transit theodolite, English, late 19th century,
Sold for £7,200 (US$ 12,202) inc. premium
Lot Details
A fine and impressive 8-inch Troughton & Simms transit theodolite, English, late 19th century,
signed Troughton & Simms, London, the telescope with cover to the objective and rack and pinion focusing, vertical 8-inch silver scale with three micrometer magnifiers and bubble level enclosed in glass case, supported by a large double bracket above horizontal circle of degrees, two micrometer magnifiers and tangential screw adjustment, the whole raised on tripod base with three levelling screws, in two mahogany cases with large brass carrying handles and the door on one applied with the trade label of Bardelli & Co of Torrino 19.5in(50cm) high

Footnotes

  • The case door interior is applied with a label written "Theodolite No. 2" indicating this was one of a pair of Troughton & Simms large size theodolites used for a major surveying project such as mapping a country.

    By the end of the 19th century transit theodolites were being produced in a variety of sizes. The instrument maker Stanley is quoted as saying:

    A 5-inch or 6-inch theodolite is the largest size that may be carried comfortably in a single case; and no great advantage is gained by having an instrument beyond that size if the work is that of the ordinary survey on town or country surveys. The vernier of 4-inch and 5-inch instruments read sharply to single minutes of arc, which is as nearly as can be plotted with any degree of certainty with an ordinary protractor reading by vernier also to to minutes only; 6-inch instruments read to 30 but generally 20 seconds.
Activities
Auction information

This sale is now finished. If you are interested in consigning in future sales, please contact the specialist department. If you have queries about lots purchased in this sale, please contact customer services.

Buyers' Obligations

ALL BIDDERS MUST AGREE THAT THEY HAVE READ AND UNDERSTOOD BONHAMS' CONDITIONS OF SALE AND AGREE TO BE BOUND BY THEM, AND AGREE TO PAY THE BUYER'S PREMIUM AND ANY OTHER CHARGES MENTIONED IN THE NOTICE TO BIDDERS. THIS AFFECTS THE BIDDERS LEGAL RIGHTS.

If you have any complaints or questions about the Conditions of Sale, please contact your nearest customer services team.

Buyers' Premium and Charges

For all Sales categories excluding Wine, Coins & Medals and Motor Cars and Motorcycles:

Buyer's Premium Rates
25% on the first £50,000 of the Hammer Price
20% from £50,001 to £1,000,000 the Hammer Price
12% from £1,000,001 of the Hammer Price

VAT at the current rate of 20% will be added to the Buyer's Premium and charges excluding Artists Resale Right.

Payment Notices

Payment in advance: by cash, check with banker's card, credit card, bank draft or traveler's cheque.

Payment at collection: by credit or debit card.

Credit card charges: a surcharge of 2% is applicable when using Mastercard, Visa and overseas debit cards.

Shipping Notices

For information and estimates on domestic and international shipping as well as export licenses please contact Bonhams Shipping Department.