Illustrated catalogue and price-list of drawing and tracing papers, sun print papers and equipments, drawing instruments and materials, surveying instruments, accessories, etc. / Kolesch & Company. (1917)
Kolesch & Company · Kolesch & Company · leaf 274
m areservoir or tank. For this purpose, it is necessary to know accurately the area of the channel ortube though which the water is passing and the meter to be placed within it. Thenthe volume of water passing per minute is shown in cubical feet by multiplying ordividing (according to area of tube)… … 8081 Current Meter, with 2 graduated wheels registering to 1,000 revolu-tions, with eccentric lever, operated by strings, for engaging or dis-engaging. Propeller, 5 in. diameter, with agate and ball-bearingaxis. Detachable metal rudder, 7x3 inches. Can be attached to anyconvenient pipe or pole…
Drawing instruments · Surveying -- Instruments
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![An illustration from Essai de physique, par Mr. Pierre van Musschenbroek ... avec une description de nouvelles sortes de machines pneumatiques, et un recueil d'expériences par Mr. J. v[an] M[usschenbroek] Traduit du hollandois par Mr. Pierre Massuet .. (1751)](https://img.insideoutlibrary.com/img/200/ia-essaidephysiquep02muss-489-81.webp)
