with small arms.

The next three groups included gauges, drills, cutters, punches and
dies, trucks, jigs, tap pieces and general tool-room work. The gauges
included plug, ring, cylinder and screw gauges to the closest degrees
of accuracy, which in practice are verified by the rigid inspection of
the National Physical Laboratory.

A fair illustration of the accuracy that is habitually required in a
large volume of work is to be seen in the final gauging and inspection
of a screw gauge for a fuse, in which the women inspectors were
described in the catalogue as examining these screws by an optical
projection apparatus, magnifying fifty times, with the help of which
the inspector notes the defects in size and form, and the necessary
corrections.

The cutting tools included sets of cutters for the manufacture of
shells, as well as twist drills, reamers, milling cutters, gear
cutters, screwing dies, taps and lathe tools. Some of this work is
of high accuracy, and a set of solid screwing dies has the particular
interest that almost all the operations are carried out by women after
they have been in the shop for a fortnight. The general tool-room
work included an exhibit of seventy-one punches and dies for cartridge
making. Another set of dies was shown for small-arms ammunition, and
specimens were also exhibited of chucks, die-heads and other work.

Two other groups dealt with the metal fittings and wooden structural
parts of aircraft, and to see girls work on these is intensely
interesting--anything more fragile looking and more beautiful than the
long uncovered wing it would be difficult to find. A notable feature