Cowley automatic level, levelling instrument, 1960s.
Dimensions: 13 x 14 x 5.5 cm.
Case: 15 x 16 x 7 cm.
Sitesquare, angle measuring instrument, 1960s.
Dimensions: 13.5 x 8 x 8 cm.
Case: 15.5 x 11 x 9 cm.
Use- and age-related wear. Functional at the time of cataloguing. No functional guarantee provided.