Popular Science Monthly, v. 144, n. 1, 1944

Google Books

144

1944- 01

Public domain

Is Part Of
Title	Alternate label	Class
Seawater desalting kit for army and navy flyers
An elongated microscope for checking on the finish and rifling of gun barrels
Tri-metrogon process as a fast and accurate method for aerial mapping
TBF Grumman Avenger a midwing torpedo plane serves as light bomber and antisubmarine plane
Mirror-aimed machine guns to blast enemy planes behind the tail
Goodyear Aircraft Corporation's M-1 a large nonrigid airship for anti-submarine warfare
A rifle grenade launched in much the manner of a mortar shell
Horten IV an all-wing, tailless, single seater glider able to stay aloft for 9 hours and a half
Bullets with a needle sharp point that extends beyond the bullet's nose
A gun sight used in trainings that simulate actual flying
A gasoline portable engine heater particularly useful in starting seaplane engines
Canvas air-filled bags to raise the wing and test the landing gear, allows to save precious metal
Assemblable bouncing jeep toy made by scrap wood
A large rubber raft able to room 25 castaways and supplies for 30 days
A power-driven "chin turret" equipped with two .50 caliber guns that repel frontal attacks on B-17G
A battle costume for fighters able to stop bomb and shell fragments and keep the wearer from drowning.
A twin rotors technology allows to replace the usual rear rotor of an aircraft with a vertical fin
Dioramas and scale models as instruments of war
Diving faceplate for underwater work
Methods for raising sunken ships and submarines