Type:    Client Equipments
Maker:    OKI ELECTRIC INDUSTRY CO., LTD, JAPAN,
Place Made:    Japan
Date Made:    1930
SIZE:    L45* W17* H30cm
Function/Purpose:    The sounder is fastened in the wooden box (echo chamber), which is used to collect the sound while receiving a telegraph. This makes the receiving clicking sound clearer for the operator to identify. This open circuit type simplex telegraphy circuit equipment is used for receiving telegraphs.
Characteristics:    The open circuit type simplex telegraph sounder possesses a telescopic arm, which can help the telegraphers pull the echo chamber closer to them to hear the telegraph more clearly.

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