. Popular electricity magazine in plain English. Sergeant Marie Terragos, Mexican Joan of Arc,who during battle of Mesa shot 20 Federals. Attarget practice Sergeant Marie beat out 50 men. Miss Condelario, who, armed with rifle and six-shooter, wentinto the thick of the fight to bring out wounded. She is restinga moment and lighting a cigarette. POPULAR ELECTRICITY and the WORLDS ADVANCE 1133 BUREAU OF STANDARDS TESTSTRACK SCALES The Bureau of Standards of the De-partment of Commerce has equipped andis sending out over the country a testweighing car to test the scales used in the Bureau of Stan
. Popular electricity magazine in plain English. Sergeant Marie Terragos, Mexican Joan of Arc,who during battle of Mesa shot 20 Federals. Attarget practice Sergeant Marie beat out 50 men. Miss Condelario, who, armed with rifle and six-shooter, wentinto the thick of the fight to bring out wounded. She is restinga moment and lighting a cigarette. POPULAR ELECTRICITY and the WORLDS ADVANCE 1133 BUREAU OF STANDARDS TESTSTRACK SCALES The Bureau of Standards of the De-partment of Commerce has equipped andis sending out over the country a testweighing car to test the scales used in the Bureau of Standards ScaleTesting Car DITCH DIGGING BY MACHINERY In sections of country where tile islaid to drain the land before it can becultivated, a mechanical ditch digger isalmost a necessity. A modern type ofmachine is shown in the picture. Bucket. different cities of the unio: , The car, as isshown in the illustration, is equipped witha number of standard weights, and appa-ratus for putting them on the trackscales to be tested. A crane bridgeequipped with a trolley and a hoist canbe projected out of one end of the carand any given number of standardweights can be placed on the small truckand run out on the scale platform. Most track scales have four pairs offirst levers and the scales are tested byobserving the scale reading for a knownamount of standard weights on the may be gradually added to thetruck, giving readings at a number ofpoints on the scale. The car carries eight weights of 10,000pounds each and four of 2500 pounds are of cast iron, machined. shaped blades upon a strong, circular,steel wheel dig their way down to thedepth set as they revolve, each bucketautomatically dumping its load upon alateral carrier as it reaches its highestpoint. This carrier drops the dirt in aneat pile along the edg
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectelectri, bookyear1912
