Greetings All, I am looking for a Harshaw 3500 reader to buy used. If you have any extra ones, please call or email. Thanks, Rob Robert J. Gunter, CHP CHP Consultants rjgunter at chpconsultants.com www.chpconsultants.com www.chpdosimetry.com Tel: +(865) 387-0028 Fax: +(866) 491-9913