False tanks used to check up gasoline filling stations. Theodore A. Seraphin, Deputy Supervisor of Weights and Measures of Philadelphia, with the false tank he displayed at the National Conference on Weights and Measures in Washington, May 26th. This tank he conceals in his car and checks up on gaso

Demonstrates non-sinkable ship to members of Congress. Adam T. Drekolias, of New York, demonstrating to members of the House Naval Affairs Committee, February 24th, his invention which he claims will keep any ship from sinking, no matter how badly damaged. The invention is a collapsible chamber desi

And now a beer meter. Washington, D.C., May 1. To aid Uncle Same in collecting the tax on the millions of barrels of beer brewed in this country every year, the National Bureau of Standards has designed a master beer meter for use of the alcohol unit of the Bureau of Internal Revenue, U.S. Treasury.

A new use for discarded automobile horns has been discovered by Dr. Wm. C. Fowler, health officer of Wash., D.C. Dr. Fowler has adapted an old rams-horn type auto horn, a relic of the days when they blew them with bulbs, and fitted it to his radio to serve as a loud speaker. This gives as good a ton

Capt. S.N. Petrenko with calibration testing device (Bu. of Stds.), 3/19/26

Utilization of confiscated bootleg paraphernalia *Abstract/medium:; 8 x 10 in. or smaller

Colored radio recorder is latest in radio receivers. E.B. Judson of the Bureau of Standards and his two colored radio recorder, automatically recording signals in two colors, red and black. This automatic receiver is capable of receiving signals from American or European stations

P.T. Russell of Navy Yard with ocean depth finder, 4/27/26

Rating gasolines at the Bureau of Standards. Washington, D.C., April 17. F.R. Carter of the U.S. Bureau of Standards is shown adjusting the mixture of gasoline to find out the rating in octane numbers of gasolines. The three carbureter shown in the foreground are each filled with a gasoline tow of w