What the World Is Doing

Feilding Star, Volume 3, Issue 577, 1 June 1925, Page 6

What the World Is Doing

Tiny Camera Is Built under Lens with Jewelers’ Tools Requiring flic use of jewelers' tools and magnifying glasses in its construction, a miniature camera with parts that. work, and less than an, inch in length, has been madei for the royal doll house of the

moon of England. Three months continuous work by experts was necessary- to complete the tiny instrument. All pieces were formed by hand and carefully checked with larger cameras to insure,accurate shape. The lens is a minute d.sk of crystal, and the shutter may be operated the same as in the real article. A small pencil for autographing is provided in a holder on the back. The bellows can be easily opened out and folded for inserting the camera in a carrying case .vhieh has been furn-shed to lit it. An album, neatly bound and decorated, is also a part of the pygmy photographic outfit. * * * Improving the Headset A French amateur has found that ike purity of lone of the headset may be greatly improved by . piercing the diaphragm. A small hole—about .1 in diameter—is drilled through the diaphragm in each receiver. The idea has been tested in bo<h wire telephony and radio, and. it 's said, results in a prenVon and clarity at tone unobtainable othenv.se.

As Seen by Popular Mechanics Magazine) 4

Preventing Tail-Light Theft In some localities the theft of tail-lamp bulbs is prevalent. As it is such a simple matter to remove the bulb from a tail lamp, the mere pushing in of the thin celluloid window in the side of the lamp giving access to the bulb, motorists will appreciate an equally simple remedy, especially where police regulations are strictly enforced, as the absence ot a tail light may mean a tine. In place of the flimsy celluloid, cut a section of strong open-mesh wire to the same size, and slip it into plane; it may be soldered if desired. but if it is fitted tightly, this is not necessary. With this in place, the bulb can. only be removed by taking out the red glass, and as the split-wire ring holding this in place is not usually easily taken out. the average sneak thief will transfer his attentions to some other car. * * * Snow Skates to Add a New Thrill to Winter Sports Skates for use in snow have born designed to add another thrill to the list of winter sports. Strongly constructed of straight-grained hickory treated with'oil. they arc said to hold the weight of the heaviest adult while being light enough nol to tire children. The runners are of r.is*less steel and the top is covered with corrugated rubber to provide a non-slip .surface. The skates arc attached to or-

ou;io luut-u ordinary ar r oqv and a square of clot b , Heavy cord being tied to the corners of the cloth and to the arrow, just below (lie head, as shown in the draw, in g. The arrow is handled in the usual way with the cloth folded over'the head. While it is iravcliug upward, the doth stays tightly around the stick, but as soon as the arrow starts (lo\v:uv;irH t Hr* riot h

dinary shoes with rawhide straps and may be used more months a year because there is no waiting for ice.

An Arrtpw Parachute. An arrow parachute gives the youngsters much delight. It consists of an

uuw award uiescioin opens-and tills up with air, causing the 1 arrow to come down slowly. Of course, . the head must not be too heavy or it will come down first and then the cloth will not open.. The arrow must be shot upward vertically. - *• * * , Cheap Aluminum Paint Banana oil.’which is commonly used in mixing up aluminum paint, is far too expensive to justify its use for extensive exterior work. A jeweler,"however, wishing to cover his store front in aluminum, made a satisfactory and cheap paint of this kind without banana oil. Instead he used a solution of equal parts of boiled linseed oil. turpentine and spar varnish, to which f . was lidded a piece of gum arabic the size of a bean. These ingredients were heated together and then enough . aluminum bronze was added to give'the paint prop-A • or consistency .and good covering quality.'' ' Besides having a soft, lustrous finish, this paint looms up well in the dark. * + * (fj]A non-magnetic cast iron is being produced by a concern in England. t .