Telephones for existing Electric Bell Wires
DINING ROOM PORTABLE SET
Pattern No. B680
This is a Hand Combination Transmitter and Receiver, portable type, somewhat similar in design to Pattern No.
B660. It, however, has but a single key in the handle, is only intended for use with Pattern No.
B675, and further, requires a
cup-hook to be fitted near the special push (with which it is used), on which to suspend it.