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TAPES AND RODS Steel tapes are commonly 25 , 50 , 75 , 100 , 200 , 300 , or 500 ft long . ... Most long tapes are on reels , which should be of ample size , for a wet and dirty tape fills a larger reel than a clean one , and long tapes ...
For a nominal charge the US Bureau of Standards , Washington , will test a tape and forward results . If tape is too long , measurements made with it are recorded too short , and proper correction should be added .
Tape reels for underground work should be larger and stronger than for surface work . If the type shown at a , Fig 20 , be employed , for a ribbon tape 100 ft long , the reel should o 6 Fig 20. Tape Reels have a capacity of 150 or 200 ...
Apa yang dikatakan orang - Tulis resensi
LibraryThing ReviewUlasan Pengguna - wackyvorlon - LibraryThing
I only have the second volume of this work, and I love it! Found at a local Value Village, it is filled with fascinating information. Details of all aspects of mine engineering, including compressed air, ventilation, and supporting structures. Baca ulasan lengkap
Conditions Methods in General
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