
Compare The Abney Level Handbook by Hartley Amasa Calkins, Hardcover | Indigo Chapters
Hartley Amasa Calkins
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How to Use the Topographic Abney Hand Level / Clinometer Tool - A Guide for the Experienced and Beginners, Complete with Diagrams & Charts (Hardcover) | The Abney Level Handbook by Hartley Amasa Calkins, Hardcover | Indigo Chapters