Latitude Hooks and Azimuth Rings: How to Build and Use 18 Traditional Navigational Tools (INTERNATIONAL MARINE-RMP) Paperback – Illustrated, 16 Dec. 1994

Latitude Hooks and Azimuth Rings: How to Build and Use 18 Traditional Navigational Tools

Sundials: Their Theory and Construction

Easy-to-Make Wooden Sundials (Dover Crafts: Woodworking)