a: A gravimeter with a cylindrical metal and plastic casing, standing on a triangular plastic base with three adjustable feet. On the top of the instrument is a spirit level, an on-off switch and a dial. There is a label stuck to the upper part of the instrument reading 'DIAL CONSTAN // .2371 (5) // MILLIGALS/DIVISION', and the side of the casing is engraved 'The Master // WORDEN GRAVITY METER // No 743 MODEL 121 // TEXAS INSTRUMENTS // INCORPORATED // HOUSTON TEXAS MADE IN U.S.A. // PATENT NOS. 2,674,887 2,732,718 2,738,676'. Tied around the instrument is a white rope carry handle, secured with black duct tape.

b: A silver-painted circular metal stand with three feet and a circular spirit level in the centre.

c: A cylindrical white-painted metal case with a hinged lid (one hinge) and one metal clasp. There are three metal loops around the side of the case to take a handle. The lid and base are lined with padded blue textile, and there is a wad of yellow foam inside the case. There is a handwritten paper label stuck to the outside reading 'JAMES CLARK ROSS // SIZE 50 x 50 x 30CM // WEIGHT 8KG // CUBE 0.04 CuM // JS988018', and a printed paper label reading 'FRAGILE'.

• a: Height: 375mm, diameter: 175mm
• b: Height: 86mm, diameter: 230mm
• c: Diameter: 305mm

• Used on: British Antarctic Survey 1962- ( - )