Assembles parts of roller skates: Fits rubber cushions into
brackets, and rivets barckets to frame, using air rivet gun.
Inserts axle through hole in frame, and mounts wheels on axle.
Places nut and washer on threaded end of axle, and tightens nut,
with wrench. Rivets leather strap to frame, using air rievt gun.
May insert ball bearings into retaining cups of wheels.
