development in an all-purpose electrical measuring instrument, which will be found extremely useful in any laboratory where electrical ... To the back of the instrument is attached a permanent etched metal direction plate with circuit diagram and full instructions for use. ... Range 100-0-100 millivolts, in 4 millivolt divisions. 4.
|Title||:||Scientific Instruments, Laboratory Apparatus and Supplies for Physics, Chemistry, Biological Sciences and Industrial Testing|
|Author||:||Central Scientific Company|