Description
Rectangular metal box with screwed on lid and strip of red tape underneath. Black plastic panel on top with 8 dials and inscriptions "Type 5214A" "H. Tinsley & Co Ltd London SE 25"
Acknowledgement: © History of Science Museum, University of Oxford, inv.91527
Rectangular metal box with screwed on lid and strip of red tape underneath. Black plastic panel on top with 8 dials and inscriptions "Type 5214A" "H. Tinsley & Co Ltd London SE 25"