All public logs

Combined display of all available logs of BRL-CAD. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

• 19:30, 25 March 2011 Sean (talk | contribs) uploaded File:Backstaff.jpg ("The back-staff, also known as the Davis quadrant (called a quadrant because it could measure up to 90º), was the first instrument specifically designed for finding latitude at sea. English explorer John Davis conceived the instrument while on a voyage t)