Riley, S.J.2015-02-082015-02-081969Riley, S.J. (1969). A simplified levelling instrument: the A-frame. Earth Science Journal, 3(1), 51-53.https://hdl.handle.net/10289/9139A levelling instrument has been developed which permits work in a high degree of detail without field assistance.application/pdfen© 1969 Waikato Geological Society, The University of Waikato. All items in Research Commons are provided only to permit fair dealing for the purposes of research or private study. They are protected by copyright with all rights reserved unless otherwise indicated.Journal Article