3D Radio

Three-dimensional renderings of classic radio receivers
by Dan Palatnik

via kaschey_lp @ Dieselpunks LJ Community

Chemical Warfare for Kids

Cover of the Chemical Warfare board game
Artist: AV Kuklin
1925

via babs71 @ LJ

Dux

Rome's only truly modern obelisk was erected by Mussolini, and it bears the words, "Mussolini Dux." At the end of the Fascist regime, all public references to the Duce were outlawed and removed, but the letters on this 55-foot column were too large to be effaced, so they remain as a bizarre testament to the dictator's oh-so-Roman megalomania.

Source

Photo by paolofefe: Lanciatore di Coriandoli @ Flickr

Atlantic Republic. Navy

Carrier-borne Takapu biplane over the ARNS Neptune

by der_fluger @ LJ
More Atlantic airplanes @ Tarrantry

Special Issue

Géo Ham, 1930

Competitively Priced Truck

REO advertisement, 1937

Wheel/Track

Following WW1 and a side trip to deliver the "M-21" to Sweden, Josef Vollmer, the former chief designer for the German War Department's motor vehicle section, came to reside in Czechoslovakia. Joining Skoda, he set to work on a wheel/track light tank. His KH-50 design had roadwheels mounted on the drive sprockets and a jockey wheel behind to keep the tracks up off the ground.
Despite impressive specifications - 13mm armor, a 37mm turret mounted gun, and a 50hp engine capable of pushing the tank up to 8mph (tracks) and 22mph (wheels), it was rejected by the Czechoslovak army. However, the army was impressed. The military liked the hybrid Kolohousenka wheel/track arrangement and commissioned further studies. Further designs would be the KH-60 and 70.
Notable differences would be the engine power increased to 60-70hp and a better system of switching between track and wheel. A simple ramp device allowed the track-to-wheel change in less than 10 minutes.
The actual years of production and testing were 1925 - 30, during which time, two KH-50 prototypes were built. One was rebuilt into a KH-60 and the other scrapped. Actual production included two KH-60 for the USSR and one KH-70 for Italy.
As time passed, this vehicle came to be regarded as more of an experiment rather than a combat vehicle.

Source: TANKS!