12-31-2012, 09:51 AM
Using an old wood blade I checked the SFPM with the Biddle Gage using the wheel attachment that comes with it. A 6 inch wheel takes a direct reading. A 12 inch wheel you divide be 2. A 14 inch wheel you divide by 2.3 . The reading was an even 600. That divided equals 260 SFPM.
"Billy G"
"Billy G"