Inquiry (采购产品): model 49p-172-r2 Please information in how to adjust and clean the subject instrument. thanks,Bill **** Hidden Message ***** William DeLongis 200-16 Wilson st Port Jefferson Station, NY 11776 USA Company: DESIGN/OL INC Title: PRESIDENT Phone: 6314742134 Fax: 631 474 9310 E-mail: billd@design-ol.com **** Hidden Message ***** billd@design-ol.com