3 books
The Abney Level Handbook: 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: How to Use the Topographic Abney Hand Level / Clinometer Tool - A Guide for the Experienced and Beginners, Complete with Diagrams & Charts
The Abney Level Handbook