Coupled with a director, this height finder, indicates height, speed and range of aircraft in flight and fires automatically. Instrument repairmen Carl J. Lundstedt (l) and Oscar M. Carlson here check on one of these precision instruments which has come to Rock Island arsenal for overhauling.
| Published: | March 3, 2025 |
Published in the interest of the Rock Island Arsenal Employees. The Arsenal Record originally ran during the first half of the 20th century, these editions are made available here for public review.
