On 5 May 2006 at 20:14, Roger Breton wrote: > I'm keeping an eye out on eBay for a USB2000... I once bought a Tristan spectrometer on EBay for ~500 Euros. Sony CCD and SMA 905 based. Has a nice LCD touchscreen, internal battery(!), memory card... built for rough environments and because of the battery/memory card slot ideal for measuring things outdoor. The interface is documented (you basicly just use menu items as command). I am not sure how it compares in measurement quality to the OceanOptics... but the manufacturer seems less known and thus might sell cheaper used on Ebay. The manufacturer also offers the devices directly on Ebay (usualy for the normal price). Maybe you can consider putting that one also on your ebay "watch list"... The main problem is, where do I get a good 45/0 probe? Increadible, but there seems to be no source... -- Wolf Faust Tel: +49-69-5486556 mailto:wfaust@xxxxxxxxx Fax: +49-69-95409598 http://www.coloraid.de Mobile: +49-179-6924769