British Mess Tin Set: WWI Gallipoli Hand Select:No The mode of operation is

The mode of operation is selected by a switch on the amplifier unit

The No 4C comprises a search head mounted on a telescopic handle

this is because WW1 slings were reissued in WW2

or possibly from original manufacture

British Mess Tin Set: WWI Gallipoli Hand Select:No The mode of operation isOriginal Item: Adopted in 1900 and used continually through the First World War these are original two piece "D" shaped Mess Tins with lids. Bearing WWI dates they do show rust staining but are fully serviceable. Extremely scarce and very few available we believe these are Australian issued; think Gallipoli! Dates Vary. "The name on the mess tins Simpson Adelaide 1915. Simpson were a press steel manufacturing plant in the hills above Adelaide capital