Covers the requirements of ring gauges for the inspection of drill chuck taper arbors of Morse and Jacob taper type as covered in IS: 9094 ( Part 1 ) - 1979 ' Drill chuck taper arbors: Part 1 Having taper shanks'.
IS 10649-1983 history
1984IS 10649-1983 Specification for taper mandrel rings for drill chucks of Morse and Jacob's taper types