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. (1907)
Kolesch & Company · Kolesch & Company · leaf 210
ommencement of an observation, thus obviating the neces-sity of taking-a reading of the dials before proceeding to make a fresh observation.A further improvement is the recent introduction of ball-bearings to the central shaftby which friction is reduced to a minimum and the wearing of the… … This instrument is constructed and used for the measurement of rate or flow ofsmall rivers and streams, also for the How of tides. For this purpose the meter should be placed in the stream, as per directions sup-plied, and allowed to run for a given time. The rate of the stream per unit time isthen…
Drawing instruments · Surveying instruments
Internet Archive · Building Technology Heritage Library · Public Domain Mark 1.0. Free to use for anything.
