| Earpiece No. 1
Should only be used with a Receiver Bell No. 1A mark B and a Diaphragm
No. 9 or a Receiver Bell No. 1A mark NT10 and Diaphragm No. 19.
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| Earpiece No. 2
Should only be used with a Receiver Bell No. 1A marks C, D & 4001
and a Diaphragm No. 12 or a Receiver Bell No. 1A mark 4A and Diaphragm
No. 12.
This Earpiece had a 'cutout' to hear the howler, if the earpiece was
left off the phone.
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| Earpiece No. 9
Should only be used with a Receiver H.G. NT16 and a Diaphragm No. 18.
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| Earpiece No. 10
Should only be used with a Receiver Watch No's 3D & 4D and a Diaphragm
No. 12.
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| Earpiece No. 13 |
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| Earpiece No. 17
Should only be used with a Receiver and Condensers, Headgear No's 1A
& F and a Diaphragm No. 24.
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| Earpiece No. 18
Early style earpiece fitted on most bakelite handsets.
Superseded by Earpiece No. 23.
Should only be used with a Receiver Inset No. 1L or Receiver Watch
No.6L and a Diaphragm No. 12.
Colours:- Black, Chinese Red, Ivory and Jade Green.
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| Earpiece No. 22
Should only be used with a Receiver Headgear No. 10 and a Diaphragm
No. 25.
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| Earpiece No. 23
Identified by the recessed "pepper pot" centre.
Should only be used with a Receiver Inset No. 2P and a Diaphragm No.
25.
Colours:- Black, Chinese Red, Ivory and Jade Green. |
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| Earpiece No. 26A
Plastic screw on earpiece used on Handset No. 3 (fit most 700 type
telephones).
Superseded by Earpiece No. 29A.
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| Earpiece No. 29A
Introduced in mid 1981 this is an Earpiece No. 26 modified to comply
with with high voltage requirements for telephones detailed in POR 1065
ABS material. |
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