Description

An exceptional and remarkably complete mid 19th century precision surveying theodolite by the renowned Manchester scientific instrument maker John Benjamin Dancer.

Dating to approximately c.1865, this substantial professional instrument is beautifully constructed in lacquered brass and incorporates a large telescope, vertical divided circle, horizontal graduated circle, finely divided silvered vernier scales, precision spirit levels and numerous fine adjustment mechanisms. The bubble levels are damaged. Below the horizontal base is attached a shaft for fixing to a tripod which includes four level adjustment screws.

John Benjamin Dancer (1812-1887) was a renowned optical instrument maker and scientist, particularly noted for inventing photomicrography and the stereoscopic camera. He is considered the father of microfilm, although he never patented his invention. Between 1841 and 1845, he partnered with another famous instrument maker, Abraham, and began building microscopes. After their partnership ended, he continued to construct various instruments, including several microscopes very similar to those of Smith & Beck and Powell & Lealand. He also built other optical instruments, such as telescopes, stereoscopic cameras, and theodolites, all of exceptional quality.

Very heavy item. Shipping to UE is 35€ and UK 55€