At our institute we are teaching Forest Management. For the training of the students in our courses we are looking for a simple instrument to measure the basal area of forest stands that can also be applied on slopes. I have heard about glass-prisms and I have an address of an Inc. in the USA where they are produced (cruise-master prisms, Sublimity, Oregon). I have written to that Inc. but I haven`t got any answer yet. Does anybody of the list members know where we can get these prisms (an address, fax - number or e-mail would be ideal) ? Thank you Marc Marc Hanewinkel, <hanewink@ruf.uni-freiburg.de> Institut fuer Forstoekonomie Institute of Forest Economics University of Freiburg Bertoldstr. 17 79085 Freiburg i.Br. Germany Tel:0761-203-3686 Fax: 0761-203-3690
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