Читать книгу The Handyman's Book of Tools, Materials, and Processes Employed in Woodworking - Paul N. Hasluck - Страница 23

The joiner and cabinet worker have a multitude of uses for the above tools, which are of the simplest construction. The ordinary form of wing compasses is shown by Fig. 44, in which the wing (the curved side projection) forms one with the left leg, whilst the right leg has a slot by means of which it slides up and down the wing, the set screw being tightened when the legs are to be fixed at a certain distance apart. For very accurate work, compasses with the sensitive adjustment at side, as shown in Fig. 45, are found to be useful. Compasses can be used very conveniently as simple dividers, but these cost very little. They are used for stepping off a number of equal distances, for transferring measurements, and for scribing. Callipers are used for measuring diameters of round pins, circular recesses, etc.; for the former purpose outside callipers (Fig. 46) and for the latter purpose inside callipers (Fig. 47) are used. Callipers are subject to great variation in shape, but those used in woodworking should be the simplest obtainable.

Fig. 37.—Panel Gauge.

Figs. 38 and 39.—Elevation and Section of Panel Gauge Stock.