http://www.unc.edu/~rowlett/units/index.html Good resource for conversion factors of all units, and I mean ALL units... Check it out! "millimeter (mm) - a common metric unit of distance. One millimeter equals about 0.039370 inch or 39.370 mils. " 2.5mm = 0.098425" 3.0mm = 0.11811" Rich Hollyday >Could someone express 2, 2-1/2 and 3 millimeters as decimals in inches? Is >there a source for brass tubes that would fit over rods these sizes in >mm's, similarly as a 3/32" K & S tube would fit over 1/16" wire, etc.? RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]