ATM TELEPHONE T.3903

 


Mining Telephone
CERTIFIED SURFACE TYPE MAGNETO TELEPHONE

Mines Department Certificate No. T/Tel/8.

Desk Pattern T.3903
This Telephone is certified by the Mines Department as being intrinsically safe for surface use only, and is suitable for inter-connection with any approved magneto telephone system, the generator being fitted with a non-inductive shunt and the ringer shunted by an approved condenser.  It is fitted with a hand microtelephone of the B.P.O. standard design, incorporating an approved design of transmitter.

Height 10.5in; width 10in. depth 6.5in.
Weight 12lbs. Price 6.1.0

Taken from the A.T.M. Mine Telephones and Signalling Equipment Book - April 1939

Superseded by L11561


Two-cell Battery Box for T.3903 Telephone (T.4651A)
Oak cover polished finish with hook and eye fastener.

Height 4.5in. width 3.75in. depth 2.5in.

Needs two T.2190 Dry Cells for T.3903 Telephone

Taken from the A.T.M. Mine Telephones and Signalling Equipment Book - April 1939

 
 
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Last revised: October 06, 2012

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