M3 Type 120 

 Serial 11826 

 Vertical Calibration 

 April 1963 

 Amplitudes: + 50 Mils 



MB Type 124 

 Serial 8958 



Horizontal Calibration 

 April 1963 

 Amplitudes: + 50 Mils 



MB Type 124 

 Serial 8391 



Horizontal Calibration 

 April 1963 

 Amplitudes: + 50 Mils 



4 8 12 16 20 



FREQUENCY IN CPS 



Figure 9 - Calibration Curves - Thrust Bearing Foundation 



44 



