If you go to there store site on EBay, you can obtain a more complete set of 
pictures of the EsterLine-Angus chart recorder which is connected to a Leeds 
Seismometer.  There are two photos of the seismometer, a closeup showing the 
damping adjustment and coil lock and the other a full picture of the unit.  
Hope this is helpful to anyone wanting or needing a seismometer and recorder.
Jim Allen
If you go to there store site on EBay, you can obtain a more complete set of 

pictures of the EsterLine-Angus chart recorder which is connected to a Leeds 

Seismometer.  There are two photos of the seismometer, a closeup showing the 

damping adjustment and coil lock and the other a full picture of the unit.  

Hope this is helpful to anyone wanting or needing a seismometer and recorder.

Jim Allen