A Large Transit Theodolite In Case With Night Lamp - Troughton & Simms, London
Item History & Price
| Reference Number: Avaluer:126243 |
A very large oxidised brass transit theodolite signed, 'Troughton & Simms, London'. It stands 15.5" ( 39.5 cms ) high and has an 11.5" telescope, adjustable via the rack and pinion thumb wheel. The huge vertical circle of 6.5" has a silver scale divided into four quadrants of 0 - 90 in degrees with the verniers reading to 10 arc minutes with the aid of magnifyers.It has a similar size vertical circle which has the silver scale divided from 0 - 360 in degrees, each degree sub-divide...d to a 1/6th; all four verniers engraved, 'A, B, C, & D'. The instrument retains intact, graduated bubble levels ( 5.75" & 4" ) and all thumb wheels, adjusters, screws etc turn freely.The telescope has intact cross sights and gives a good, inverted image when viewed through.
The large wooden case holds an 8" trough compass, lens erector tube with eye-piece for terrestrial viewing, 90 degree 'elbow' eye-piece, parafin lamp and holder. The middle axis mount of the telescope has a glass 'window' at one end which lines up with the 'window' of the lamp when in situ. The lamp aids the user of the instrument to observe objects & readings in poor light.
The aluminium support bar for the top bubble level is original to the instrument. Early 20th century transits / theodolites produced by Troughton & Simms had some parts manufactured in aluminium due to the sheer weight of these instruments. This piece is no exception weighing in at 8.8 kilos unboxed and just over 15 kilos boxed.
Strap to case is broken.
If the postage costs are less I will refund through Paypal.
U.K............... post £18 tracked / recorded.
Europe.......... " £55 tracked / recorded.
U.S. .............. " £98 " "
The large wooden case holds an 8" trough compass, lens erector tube with eye-piece for terrestrial viewing, 90 degree 'elbow' eye-piece, parafin lamp and holder. The middle axis mount of the telescope has a glass 'window' at one end which lines up with the 'window' of the lamp when in situ. The lamp aids the user of the instrument to observe objects & readings in poor light.
The aluminium support bar for the top bubble level is original to the instrument. Early 20th century transits / theodolites produced by Troughton & Simms had some parts manufactured in aluminium due to the sheer weight of these instruments. This piece is no exception weighing in at 8.8 kilos unboxed and just over 15 kilos boxed.
Strap to case is broken.
If the postage costs are less I will refund through Paypal.
U.K............... post £18 tracked / recorded.
Europe.......... " £55 tracked / recorded.
U.S. .............. " £98 " "
