[896]. Hand lever, simple pattern; wrench or spanner.

[897]. Headed lever, for valve rod and other movements. See [Nos. 149] to [152].

See also [Section 97].

Section 49.—LOCKING DEVICES.

[898]. Common sliding bolt.

[Larger plate.]

[899]. Common latch.

[900]. Cam locking bolt; locks the bolt when either in or out, so that it can only be moved by the cam spindle.