V: Air. Part 2:

Averaging Device, Adjustments, and Practical Use U.S. Department of the Navy, 19 How to use instrument with averaging device; necessary checks and adjustments; practical use for sun and star observations. (MN 83ac; 15 minutes)
Complete catalog record
Series: Navigation Series
Type: Motion Picture

Sources

  1. 3434 U.S. Government Films — title, format, description, catalog record