Coins, Vintage Toys, Fine Art & More Multi Platform
Lot 211:
Description
This antique scientific instrument is a Leeds & Northrup Type S Testing Set, a portable Wheatstone bridge designed for measuring electrical resistance and locating faults in telegraph and telephone lines. The set is housed in a finger-jointed oak carrying case featuring a woven canvas handle and brass hardware. The interior lid contains an original paper instructional label titled Leeds & Northrup Type S Testing Set, which details procedures for the Murray Loop Test, Varley Loop Test, and resistance measurements. The Leeds & Northrup Co., Scientific Instruments, Philadelphia, with serial number 28257. A secondary small plate confirms a patent date of July 28, 1914. An adhesive inventory tag is present on the exterior lid marked INV. # 7085.
Width: 9 inches
Depth: 7.5 inches
Height: 6 inches
The testing set is in good vintage condition with wear consistent with age and professional field use. The oak case shows surface scuffs, scratches, and minor indentations. The brass hardware exhibits natural patina and oxidation. The instrument is sold as a collectible item and has not been tested for electrical accuracy or functionality.
Condition report:
The testing set is in good vintage condition with wear consistent with age and professional field use. The oak case shows surface scuffs, scratches, and minor indentations. The brass hardware exhibits natural patina and oxidation. The instrument is sold as a collectible item and has not been tested for electrical accuracy or functionality.
Share this lot:
