The readout is manually adjusted to bring the null meter pointer to midposi- tion separately for each of the four modulation frequencies. The entire measuring unit of the H-P 3800 is set on a tribrach with forced-centering capabilities. A poweranbsp;...
|Title||:||Electronic surveying and navigation|
|Author||:||Simo Heikki Laurila|
|Publisher||:||Wiley-Interscience - 1976|