William Spencer (navigational instrument maker)

William Spencer
SBR Logo of Spencer, Browning & Rust
Born	c. 1751 England
Died	c. 1816 England
Nationality	English
Occupation	Mathematical Instrument maker
Known for	Navigational instruments for Spencer & Browning Spencer, Browning & Rust

William Spencer (c. 1751 – c. 1816) was an English mathematical instrument maker of the 18th and 19th centuries. Spencer entered into a partnership with Samuel Browning to form the company of Spencer & Browning after he apprenticed with instrument maker Richard Rust. When Ebenezer Rust joined the partnership, the resultant firm was known as Spencer, Browning & Rust. The company manufactured navigational instruments for both domestic and international markets.