size/coarseness comparison

 

coarse thick large ....................... fine thin small

 

sandpaper (grades or grits)

50...80...180...240...320...400...600...1000...1500

 

files (cut)

0...2...4...6

 

steel wool (grades)

0...00...000...0000

 

high speed drill bits (numbered)

1...15...30...45...60...65...70...75...80

 

sheet metal (guages)

6...8...10...12...14...16...18...20...22...24...26...28...30

 

wire (guages)

6...8...10...12...14...16...18...20...22...24...26...28...30

 

jeweler's saw blades (numbered)

6...5...4...3...2...0...1/0...2/0...3/0...4/0...5/0...6/0