Portable Theodolite Brass Mahogany London 19th Century - Improved Patent Portable Theodolite "Shmalcalders Patent 82 Strand London"

Features

Age:  19th Century / 1801 - 1900

Origin:  Londra, England

Main essence:  Mahogany

Material:  Brass

Description

Portable brass theodolite, consisting of prismatic compass, telescopic sight and spirit level, marked "Shmalcalders Patent 82 Strand London". Original mahogany case, marked "AL" on the underside, with other accessories useful for precision measurements. Charles Schmalcalder designed this theodolite to be light and versatile, appropriate for quick military or expeditionary surveys. It incorporates a prismatic compass, which Schmalcalder patented in 1812. The instrument can therefore be dated between this time and 1827, when he moved his laboratory from The Strand, 82, London. A similar specimen is in the Science Museum, London.

Product Condition:
The item shows signs of wear due to age. Any damage or loss is displayed as completely as possible in the pictures. It may require restoration and recovery of french polish. Product with a Certificate of Authenticity and Lawful Origin.

Dimensions (cm):
Height: 13,5
Width: 17,5
Depth: 12