Excuse me gang...! What's Ebay? It's a web site where find seismometers or others interesting things??? Mauro Mariotti At 10.57 06/09/2000 -0700, you wrote: >The Ranger Seismometer is a seismometer. If memory serves, the natural >frequency is about 1 Hz, but it might have been adjustable over a small >range. It can be used as either a vertical or horizontal seismometer. >The big knob is used to adjust the support spring to center the mass in >either position, and the feet are designed to support it in either >position. The little window is used to see when the mass is centered. >The mass can be clamped for easy transit. As I recall, it has a >calibration coil. > >It was named after the original "Ranger" moon study program, which >carried three of these in an orthogonal configuration (less the aluminum >case) to the surface of the moon for seismic studies. Once landed on the >moon, little motors centered the units. > >Assuming it still works, this unit would be an excellent, short-period >seismometer for your seismic station. > >Doug > >BOB BARNS wrote: >> >> Hi, >> Ebay # 430096282 (ends 9/12) is a "Kinemetrics Ranger Seismometer". >> It looks interesting but I don't know what it is. >> Perhaps someone in the group can post some info about it. >> Bob Barns >> >__________________________________________________________ > >Public Seismic Network Mailing List (PSN-L) > >To leave this list email PSN-L-REQUEST@.............. with >the body of the message (first line only): unsubscribe >See http://www.seismicnet.com/maillist.html for more information. > __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>