Search Results for: Sound reproducing apparatus
cable length & fault locator, digital milliohm meter (conductor resistance meter / cr meter), digital ohm meter, comparator, digital micro ohm meter, digital power analyzer, digital capacitance meter, oscilloscope, digital panel meter, digital watt meter, digital frequency counter, digital lux meter, sound
level meter, digital temperature (cum) humidity meter, digital temperature indicator, sine square wave generator, sine square triangle function generator, power supply dc regulated, standard resistance box duly ertl calibrated, standard ac kv meter or dc kv meter, thermal stability test apparatus, spark...
http://www.sigmainstruments.com/insulation-tester-c-14.html
wikipedia, the free encyclopedia jump to navigation jump to search an early telautograph the telautograph, an analog precursor to the modern fax machine, transmits electrical impulses recorded by potentiometers at the sending station to servomechanisms attached to a pen at the receiving station, thus reproducing
historical description "telautograph" . the new student's reference work . . patents[ edit ] patent images in tiff format u.s. patent , art of telegraphy, issued july (first telautograph patent) u.s. patent , telautograph, issued july u.s. patent , telautograph, issued october u.s. patent , art of and apparatus...
https://en.wikipedia.org/wiki/Telautograph