Transit Instrument, by Troughton & Simms, London, Mid-19th Century

A very large black wooden case with two iron swing clasps containing a transit instrument and various attachments. Two copper alloy plates with five screws with square tops. The plates each have a raised buttress with a V-shaped notch. One screw is loose. A copper alloy tube with a glass lens on each end. A long copper alloy tube with a glass lens at each end and a section cut away. A copper alloy tube with glass lens and a brace with two holes. A copper alloy cylinder. A tin lined in green felt. An iron ring. A copper alloy circle with a closing aperture with handles.