Earpiece No. 1
Earpiece made of Bakelite.
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
Earpiece made of Bakelite.
Used with:-
- Receiver Bell No. 1A (marks C, D & 4001), 2B or
4A (mark 234) and a Diaphragm No. 12 or a
Receiver Bell No. 1A mark 4A and Diaphragm No. 12.
- Receivers, N.T. No.16 (mark 234).
- Receivers, Watch, No's 1B (marks B, D, and 234) or
2B.
- Telephones, No's 28 (marks 234, 235 and 237), 78, 86
or 94.
This Earpiece had a 'cutout' or "dimple" on the
raised outer edge, to hear the howler if
the receiver was left off the phone and placed
earpiece down.
Drawing - 62955.
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Earpiece No. 4 For
Receiver, Bell, No. 4A, original American type.
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Earpiece No. 5 For
Receiver, Head Gear No. 4E (Mark 234) and Telephone, No.
28 (old type).
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Earpiece No. 9 Used with:-
- Receiver, Head
Gear NT16 and
Diaphragm No. 18.
- Receivers, N.T. No. 1, 2, 3, 5, 6, 9 or 12.
- Receivers, Watch, No. 1B (Mark NT 12).
- Microtelephone, Hand, N.T. No. 1.
- Telephone Nos. 28 (Mark NT 2 and NT 3), 30 or 38 (Mark
NT 5).
Drawing - 62956.
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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. 11
For Receiver, Headgear, No. 5F.
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Earpiece No. 12
For Telephone, No. 28.
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Earpiece No. 13
Used with Receivers, H.G., Nos. 1 each and 3, Telephone. Nos.
36, 80 and 140, certain Telephones. No. 28 and certain
Receivers, Watch.
20 threads per inch, B.S.W. Drawing - 62955.
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Earpiece No. 14
For Telephone, No. 28 (mark 237).
Plain earpiece, ebonite only, fixed by metal clamping
ring.
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Earpiece No. 16
For Receiver, Head Gear, No. 8A.
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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Superseded by Earpiece No. 23.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 with a Diaphragm No. 12.
Colours:- Black, Chinese Red, Ivory and Jade Green.
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Earpiece No. 22
Used with a Receiver Headgear No. 10
with Diaphragm No. 25 and Receivers, Watch No.7P.
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Earpiece No. 23
Identified by the recessed "pepper pot" centre.
Should only be used with a Receiver, Inset No. 2P
with 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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Last revised:
September 13, 2023
FM
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