Spencer and Browning was established by William Spencer and Samuel Browning in 1778, before they entered into partnership with Ebenezer Rust in 1784. After the death of Ebenezer Rust's son, the successor business was known as Spencer, Browning & Co. The firm of Spencer, Browning & Rust made a variety of navigational instruments, including octants and sextants.
This telescope was manufactured by a London firm established in 1778. The telescope is believed to be from around 1863.
Two piece brass day or night telescope
Inscriptions & markings
Spencer, Browning and Co. London Day or Night