Construction of master mechanical oscillator for testing seismic recorders and other allied apparatus
By: by F.W. Lee and G.A. Irland.
Contributors: Irland, George Allison, joint author.
Series: U. S. Bureau of Mines. Technical paper; 518
Publisher: U.S. Govt. Print. Off.
Published: 1932
Place of publication: Washington
Language: eng
Number of pages: 17
Subjects: Oscillators, Electric; Vibration; Seismometry
Notes: At head of title: U.S. Department of Commerce. R.P. Lamont, secretary. Bureau of mines. Scott Turner, director ...