Plug-in Pattern Resistance Box, by Elliott Brothers, London

Mahogany oblong box held together with total of 12 alloy screws. Bakelite lid screwed into the base with 8 copper alloy screws one of which is missing. The top is stamped "Elliott Bros London" and "No. 2113". The top is also labelled "B.T OHMS RIGHT AT 15o5c PLATINOID." Bakelite top inset with a chain of copper allow shapes forming a chain, each linked by a Bakelite square or hammer ended object, possibly dials, 24 in total. Each row of chain numbered, 1st row: 1000-1000, 2nd row: 1-50, 3rd row 5000 to 100. One Bakelite screw at end of 1st row. 7 brass alloy screw objects.