HOLIDAY MODEL DE-122 DEPTH SOUNDER

Duration: 8½min

Year Published: 1957

Format: 16mm

Color: Color

Sound: Sound

Description: Explains theory of electronic depth sounders and how this one is installed through the hull of a cabin cruiser while boat is in water. Follows step by step procedure including underwater scenes of frogman working under boat.

Complete Record: Source: Raytheon Interest level: jh-sh-c Price: free-loan Format: sd color

Metadata Source:Educational film guide. Supplements (1959-62)