he _miter-square_, Fig. 201, is a try-square fixed at an angle of
45 deg.

The _sliding T bevel_, Fig. 202, has a blade adjustable to any angle.
It may be set either from a sample line, drawn on the wood, from
a given line on a protractor, from drawing triangles, from the
graduations on a framing square, or in other ways. It is used
similarly to the T-square.

[Illustration: Fig. 205. Winding-Sticks, 12 inches Long.]

_Winding-sticks_, Fig. 205, consist of a pair of straight strips of
exactly the same width thruout. They are used to find out whether
there is any twist or "wind" in a board. This is done by placing them
parallel to each other, one at one end of the board, and the other at
the other end. By sighting across them, one can readily see
whether the board be twisted or not, Fig. 206. The blades of two
framing-squares may be used in the same manner.

[Illustration: Fig. 206. Method of Using the Winding-Sticks.]

_Compasses_ or _dividers_, Fig. 207, consist of two legs turning on
a joint, and having sharpened points. A convenient form is the wing
divider which can be accurately adjusted by set-screws. A pencil can
be substituted for the removable point. They are used for describing
circles and arcs, for spacing, for measuring, for subdividing
distances, and for scribing. In scribing a line parallel with a given
outline, one leg follows the given edge, or outline, and the point
of the other, marks the desired line. Used in this way they are very
convenient for marking out chamfers, especially on curved edges, a
sharp pencil being substituted for the steel point.

The _beam-compass_, Fig. 208, consists of two _trammel-points_ running
on a beam which may be made of any convenient length. It is used for
describing large circles. A pencil may be attached to one point.

_Calipers_, outside and inside, Figs. 209, 210, are necessary for the
accurate gaging of diameters, as in wood-turning.

[Illustration: Fig. 207. Winged Dividers.]

[Illustration: Fig. 208. Beam-Compass or Trammel Points.]

[Illustration: Fig. 209. Outside Calipers.]

[Illustration: Fig. 210. Inside Calipers.]

The _marking-gage_, Fig. 211, consists of a head or block sliding on a
beam or bar, to which it is fixed by means of a set-screw. On the face
of the head is a brass shoe to keep the face from wearing. Projecting
thru the beam is a steel spur or point, which should be filed to a
flat, sharp edge, a little rounded and sharpened on the