Popular Science Monthly
��497
���The new safety hair-cutter by means of which you can trim your own locks
Every Man His Own Hair Cutter
CONSIDERING the success that has accompanied the wide use of the safety razor in its various forms, the advent of a new honed barber tool, the safety hair-cutter, leaves no reason now why every man should not become his
��own barber. The new safety hair-cutter is operated on practically the same prin- ciple as the safety razor, the main differ- ence being that a comb takes the place of the steel guard. Holding the comb close to the head results in a close cut ; holding it at a wider angle, in a longer cut. It is possible, if the comb is man- ipulated properly, to cut the hair nearly as close as if a razor were used, although the manufacturers advocate the use of a safety razor behind the ears and along the back of the neck.
Lawn Leveling
TO enable one man to level a lawn, set up in the center of the lawn a ■'plane table." Use a drawing board sup- ported perfectly level on three stakes and about four feet from the ground. To test the height of the le\eling pins as driven, tie a knot in a plumb line, so that when the knot is on a level with the board, the end of the bob is on a level with the required height of the lawn. It is then easy, no matter where the man is working, to sight along the level board and test the height of the stakes with the line. This method saves accumulating errors when carrying the levels out from one peg to another.
��Making Throat Examination Behind a Glass Screen
ONE of the newest medical appli- ances to be placed at the dis- posal of physicians is an instrument which combines a device for holding down the tongue of a patient during an examina- tion of the throat, and a cir- cular glass shield, as shown in the illustration.
The glass shield is inter- posed between the face of the doctor and the moutli of the patient, and allows the doctor to make a much closer examination of the mouth and throat, than is now con- venient. It is often neces- sary to swab out the throat with a solution which irri-
���The device combines a spoon to hold down the tongue
and a circular glass shield through which the physician
looks at the patient's throat
��tates the delicate mucous membrane and the physician. Every physician will wcl- nerves, causing the patient to cough sud- come this apparatus, especially for the denly and violently, right in the face of treatment of diphtheria.
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