Aligning connecting rods, [ii, 119], [124].

Alignment in crank pins, errors, [ii, 169].
of cranks, testing the, [ii, 167].
of lathe tail stocks, [i, 145].

Allen valve, [ii, 377].

Allowance, for contraction fits, [i, 366].
for hydraulic fits, [i, 365].

Alteration of shape of threads from the wear of tools, [i, 89].

Angle irons, welding of, [ii, 236].
of clearance in lathe tools, [i, 257].
plate chucking, examples of, [i, 251].
plates for planer tables, [i, 418].
valve patterns, [ii, 283], [284].

Angles for the facets of scrapers, [ii, 97].
of cutting edges of chisels, [ii, 74].
of thread cutting tools, [i, 91].

Angular advance of eccentrics, [ii, 380].
cutters, [ii, 19].
cutters for groove cutting, [ii, 27].
of helical teeth, [i, 69].
teeth, and thrust of, [i, 69].
herring-bone, [i, 69].
velocity of gear-wheels, [i, 6].

Angularity of connecting rods, [ii, 375].

Annular emery wheels, [ii, 47].
wheels, [i, 1].
compared with spur, [i, 32].