This chart is A3 sized - printed on stiff plastisized card and is suitable for hanging on the workshop wall and to be wiped clean should it become soiled.
Listed are the comparison charts of drill and thread sizes arranged to give approximately 65% thread depth, suitable for most Model Engineering practice. Listed are Fractional - Number - Letter - Decimal - and Metric Drill sizes as follow:
I.S.O --> Metric - from 0.80 x .20-16mm
UNC--> Unified National Coarse - from 1-64 - 3/4x10
UNF--> Unified National Fine - from 0.8 - 5/8x18
BA --> British Association - from 16 - 0
BSW--> British Standard Whitworth - from 1/8 - 3/4x10
BSF--> British Standard Fine - from 3/16 - 3/4x12
ME40--> Model Engineering 40tpi - from 1/8 - 1/2
ME32--> Model Engineering 32tpi - from 5/32 - 1/2
BSB--> British Standard Brass 26tpi - from 3/16 - 5/8
BSP--> British Standard Pipe - from 1/8 - 1/2
