Telegraph Set Science Labs Hoverlabs is Manufacturer, Exporter Supplier of Telegraph Set Technical Description a) Telegraph Set :-&Morse sounder and key fitted on teak wood base of two units, consists of aluminum parts, b) Telegraph Set :-&Export quality open working Model on teak wood base of two units, consists of all Brass Parts. c) Telephone Set :-&Export quality set of two units with Battery Box in a nicely polished box. d) Telephone Set :-&Export quality set of two units with Battery Box in a teak wood box...