Scale: Unknown. Model of a anchor chain compressor as proposed by Sir William Symonds, Surveyor of the Navy, 1835. The model is made almost entirely of wood which has been lightly stained and finished with a matt varnish. The bed of the compressor is rectangular in shape with a stepped upper edge through which passes a pivoting, two part elliptical lever. Through the body of the compressor is a rounded grove which tapers from the centre out on either side an acts as a guide for the anchor chain to and from the chain locker and hawse pipe.