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. 



