Electric Bell Provides Steady Alarm to Rouse Sound Sleepers (Feb, 1947)
Looks like a bomb from a bad T.V. show.
Electric Bell Provides Steady Alarm to Rouse Sound Sleepers
If your wind-up alarm clock runs through its short tinkle without disturbing your slumber, try using this electric bell that will keep on ringing until you disconnect it. It employs a doorbell transformer and bell, housed in any decorative box that blends with the bedroom furniture.
make this SNOOPERSCOPE and see in total darkness (Aug, 1951)
At least they admit in the article that this is not the most practical use of this device, but still….
Wouldn’t the burglar notice her pulling out at powering up all her kit?
make this SNOOPERSCOPE and see in total darkness
By Harold Pallatz
PICTURED above is only one of the possible applications of the modified wartime sniperscope. This unit, called a snooperscope, is an enlarged version of the instrument used by GI riflemen to enable accurate fire power in total darkness. When the infrared light source is turned on, the user, by employing the special eyepiece, can see in the area covered by the light, although to the naked eye total darkness still prevails.
The Amateur Telescope Maker’s Page (Jul, 1956)
There now some slightly bigger telescopes in the Pacific area.
The Amateur Telescope Maker’s Page
AT a cash outlay of $300, boys at a Hawaiian school built a 20-inch reflecting telescope which has been valued at $20,000. It is said to be one of the largest telescopes in the Pacific area. With the exception of the grinding of the mirror, all the work was done by the students of the Kamehameha school, a private grammar school named after Hawaii’s greatest king. The f-6 mirror was donated by a government employee who ground it himself, taking six months for the job.