Beam compass no. 1173A by Houghton-Butcher Manufacturing Co. Ltd.
Beam compass no. 1173A by Houghton-Butcher Manufacturing Co. Ltd., London, 1918.
Beam compass no. 1173A by Houghton-Butcher Manufacturing Co. Ltd., London, 1918, with accessories in original fitted box
Beam compass no. 1173A by Houghton-Butcher Manufacturing Co. Ltd., London, 1918.
Fitted box, wood, for beam compass no. 1173A by Houghton-Butcher Manufacturing Co. Ltd., London, 1918.