Surveyor Optical Square with Mirrors (0811)
Index: 0811
Year: < 1900 ?
Maker: T. Cooke ??
Dimensions: 6 x 14 x 7 cm
Info
Used by surveyors to measure right angles.
Brass with wooden handle.
References/Links/More Info
University of York - Borthwick Institute - Catalogue Surveying Instruments - Page 27
