Theodolite with main telescope missing, in mahogany box with accessories:
1) plumb bob on string; 2) screw driver; 3) four springs; 4) small sighting telescope; 5) brush; 6) bracket; 7) compass; 8) eyepiece; 9) two small eyelets [? for plumbline]; 10) duster.
Both instrument and box are numbered H.O. 102 - Hydrographic Office numbering.