Details
An early tri-crystal detector
Patt No. 309, type No. 3 with Perikon crystals; five S type Burndept loading coils; seven buzzers; a sealed condenser; five ebonite mounted switches including two double pole knife versions; two WW1 S & P twin pole condensers, stamped 1918, Nos. 1977 & 4382 by the A.T.M. Co. Ltd; a Jugger Switch; two slide switches; and various linear potientiometer slides (qty)
Patt No. 309, type No. 3 with Perikon crystals; five S type Burndept loading coils; seven buzzers; a sealed condenser; five ebonite mounted switches including two double pole knife versions; two WW1 S & P twin pole condensers, stamped 1918, Nos. 1977 & 4382 by the A.T.M. Co. Ltd; a Jugger Switch; two slide switches; and various linear potientiometer slides (qty)