ebay is an internet business with an on-line auction of many different items. Usually over 2,000,000 items are for sale at any one time, so occasionally seismometers and geophones will become available. The web site is http://www.ebay.com/ where you can read all about it. It's a good place to buy and sell electronic test equipment for your laboratory. mariotti mauro wrote: > > 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) > > 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. -- Doug Crice http://www.georadar.com 19623 Via Escuela Drive phone 408-867-3792 Saratoga, California 95070 USA fax 408-867-4900 __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>