Inquiry (采购产品): Tachometer Uncertainty I need to know the uncertainty in a HT-4100 Digital Brown & Sharpe Tachometer. **** Hidden Message ***** Shelton Tate Petersburg, VA 23803 USA Company: Virginia State University Title: Student Phone: 804 878 3411 E-mail: sheltontt@yahoo.com **** Hidden Message ***** sheltontt@yahoo.com