[TOPOGRAPHY]. Surveyor's square. Set of 3 pieces. Brass pantometer, 15 x 6.5 x 6.5. In wooden box. A surveying instrument used to measure angles and perpendiculars in the field, also known as a surveyor's square or goniometric square. A slope indicator is included. Diam. 6.5 cm. There is also a spirit level, 10 x 2. Provenance: José Henry collection.