Rim Night Latch

Iron case

Brass latch

Brass sliding knob and stop switch

Latch is operated on the inside by sliding the knob back, and on the outside with the key.

Approximate measurements:-

Width - 4 5/16" (111mm)

Height - 3 1/2" (89mm)

Keyhole backset - 2 1/4" (57mm)

Knob diameter - 1 1/4" (32mm)

Case thickness - 13/16" (21mm)

Lock is in very good order throughout. The keep is missing but excellent cast iron replacements are widely available.