Dial Type |
ETL Code |
Number Ring |
Finger plate |
Ratio |
Impulses/sec |
GPO Type |
No. 8FA |
N4380 |
Non Director |
Stainless Steel |
66.6/33.3 |
10 |
8FA |
|
|
|
|
|
|
|
No. 10 |
N8381 |
Non Director |
Phosphor Bronze |
66.6/33.3 |
10 |
10FA Mark 235 |
|
N8381A |
Egypt |
Stainless Steel |
|
10 |
|
|
N8381B |
Director |
Phosphor Bronze |
|
10 |
10LA Mark 235 |
|
N8381C |
Non Director |
Stainless Steel |
|
10 |
10FA |
|
N8381D |
New Zealand (0-9) |
Stainless Steel |
66.6/33.2 |
10 |
|
|
N8381E |
Non Director |
Stainless Steel |
66.6/33.3 |
10 |
10LA Mark 236A |
|
N8381F |
Director |
Stainless Steel |
66.6/33.3 |
10 |
10LA Mark 4A |
|
N8381H |
Non Director |
Stainless Steel |
66.6/33.3 |
10 |
10LA Mark 4A |
|
N8381J |
War Time Substitutes |
Stainless Steel |
|
|
|
|
N8381K |
War Time Substitutes |
Stainless Steel |
|
|
|
|
N8381M |
Australia |
Stainless Steel |
|
10 |
10FA |
|
N8381P |
Non Director |
Moulded |
|
10 |
10FA |
|
N8381Q |
Egypt |
Moulded |
|
10 |
10LA |
|
N8381R |
Non Director |
Moulded |
|
10 |
10FA |
|
N8381S |
Chinese |
Stainless Steel |
66.6/33.3 |
10 |
|
|
N8381U |
Chinese |
Moulded |
66.6/33.3 |
10 |
|
|
N8381W |
Director |
Moulded |
|
10 |
10LA |
|
|
|
|
|
|
|
No. 12 |
N4383A |
Non Director |
Stainless Steel |
66.6/33.3 |
10 |
12FA |
|
N4383A1T |
Non Director |
Stainless Steel |
66.6/33.3 |
10 |
12FA |
|
N4383B |
Director |
Stainless Steel |
66.6/33.3 |
10 |
12LA |
|
N4383B5 |
Director |
Stainless Steel |
66.6/33.3 |
10 |
12LA (Tele Rentals) |
|
N4383F2T |
Chaplets |
Stainless Steel |
66.6/33.3 |
10 |
12 |
|
N4383K1 |
Chaplets |
Stainless Steel |
66.6/33.3 |
10 |
12 (Tele Rentals) |
|
|
|
|
|
|
|
|
N99017 |
Non Director |
Stainless Steel |
66.6/33.3 |
10 |
Flyback type for Tele 703 |
|
|
|
|
|
|
|
No. 14 |
N4383B6 |
Director |
Stainless Steel |
66.6/33.3 |
10 |
14LA |
|
|
|
|
|
|
|
No. 21 |
N4394A2A |
Director |
Moulded |
66.6/33.3 |
10 |
Black |
|
N4394AA11A |
Chaplets |
Moulded |
66.6/33.3 |
10 |
Black |
|
N4394BA12A |
Chaplets |
Moulded |
66.6/33.3 |
10 |
Ivory |
|
N4394CA13A |
Chaplets |
Moulded |
66.6/33.3 |
10 |
Red |
|
N4394DA14A |
Chaplets |
Moulded |
66.6/33.3 |
10 |
Yellow |
|
N4394EA15A |
Chaplets |
Moulded |
66.6/33.3 |
10 |
Blue |
|
N4394JA16A |
Chaplets |
Moulded |
66.6/33.3 |
10 |
Grey |
|
N4394KA17A |
Chaplets |
Moulded |
66.6/33.3 |
10 |
Green |
|
|
|
|
|
|
|
|
N4394M1A |
Non Director |
Stainless Steel |
66.6/33.3 |
10 |
|
|
N4394M1B |
Non Director |
Stainless Steel |
60/40 |
10 |
|
|
N4394M1D |
Non Director |
Stainless Steel |
61.5/38.5 |
10 |
|
|
N4394M1H |
Non Director |
Stainless Steel |
66.6/33/3 |
10 |
|
|
N4394M1K |
Non Director |
Stainless Steel |
66.6/33.3 |
20 |
|
|
N4394M2A |
Director |
Stainless Steel |
66.6/33.3 |
10 |
|
|
N4394M3A |
New Zealand (0-9) |
Stainless Steel |
66.6/33.3 |
10 |
|
|
N4394M5A |
Egyptian & English |
Stainless Steel |
66.6/33.3 |
10 |
|
|
N4394M5B |
Egyptian & English |
Stainless Steel |
60/40 |
10 |
|
|
N4394M5C |
Egyptian & English |
Stainless Steel |
60/40 |
8 to 9 |
|
|
N4394M6A |
Chinese & English |
Stainless Steel |
66.6/33.3 |
10 |
|
|
N4394M10A |
Canadian Director |
Stainless Steel |
66.6/33.3 |
10 |
|
|
N4394M20A |
Chaplets |
Stainless Steel |
66.6/33.3 |
10 |
|
|
N4394M20B |
Chaplets |
Stainless Steel |
60/40 |
10 |
|
|
N4394M20C |
Chaplets |
Stainless Steel |
60/40 |
8 to 9 |
|
|
N4394M20D |
Chaplets |
Stainless Steel |
61.5/38.5 |
10 |
|
|
N4394M27A |
Non Director |
Stainless Steel |
66.6/33.3 |
10 |
|
|
|
|
|
|
|
|
|
N4394QB2A |
Director |
Stainless Steel |
66.6/33.3 |
|
Used on N238A1T |
|
|
|
|
|
|
|
|
N4394S1A |
Non Director |
Transparent |
66.6/33.3 |
10 |
21FA |
|
N4394SA1A |
Non Director |
Transparent |
66.6/33.3 |
10 |
|
|
N4394S1B |
Non Director |
Transparent |
60/40 |
10 |
|
|
N4394SD |
Non Director |
Transparent |
61.5/38.5 |
10 |
|
|
N4394SH |
Non Director |
Transparent |
66.6/33.3 |
10 |
|
|
N4394SJ |
Non Director |
Transparent |
66.6/33.3 |
10 to 11 |
|
|
N4394S2A |
Director |
Transparent |
66.6/33.3 |
10 |
21LA |
|
N4394SA2A |
Director |
Transparent |
66.6/33.3 |
10 |
|
|
N4394SA2H |
Director |
Transparent |
66.6/33.3 |
10 |
|
|
N4394SA2J |
Director |
Transparent |
66.6/33.3 |
10 to 11 |
|
|
N4394S3A |
New Zealand (0-9) |
Transparent |
66.6/33.3 |
10 |
|
|
N4394SA3A |
New Zealand (0-9) |
Transparent |
66.6/33.3 |
10 |
|
|
N4394SA3AR |
New Zealand (0-9) |
Transparent |
66.6/33.3 |
10 |
|
|
N4394S5A |
Egyptian & English |
Transparent |
66.6/33.3 |
10 |
|
|
N4394SA5B |
Egyptian & English |
Transparent |
60/40 |
10 |
|
|
N4394SA5C |
Egyptian & English |
Transparent |
60/40 |
8 to 9 |
|
|
N4394S6A |
Chinese & English |
Transparent |
66.6/33.3 |
10 |
|
|
N4394S10A |
Canadian Director |
Transparent |
66.6/33.3 |
10 |
|
|
N4394S20A |
Chaplets |
Transparent |
66.6/33.3 |
10 |
21CA |
|
N4394SA20A |
Chaplets |
Transparent |
66.6/33.3 |
10 |
|
|
N4394SA20AR |
Chaplets |
Transparent |
66.6/33.3 |
10 |
|
|
N4394SA20B |
Chaplets |
Transparent |
66.6/33.3 |
10 |
|
|
N4394SA20D |
Chaplets |
Transparent |
61.5/38.5 |
10 |
|
|
N4394SA27A |
Non Director |
Transparent |
66.6/33.3 |
10 |
|
|
|
|
|
|
|
|
Later dials using Plessey Part Numbers
The main part number is 408/1/30060/XXX where the suffix
XXX is broken down into 3 digits. For example, using the tables
below, a dial 408/1/30060/050 would be a dial with a N121354A finger
plate, a Libyan Number plate and a ratio of 2:1.
This part number covers Post Office Dial type No's 21FA,
1/21FA, 21FA Steel and all tropical dials.
1st Digit of XXX
1st Digit |
Finger Plate |
Spring set |
Spring |
0 |
N121354A |
408/1/50843/000 |
N114131 |
1 |
N113885A10 |
408/1/50843/000 |
N114131 |
2 |
N12581 |
408/1/50843/000 |
N114131 |
3 |
N121354A |
408/1/30053/000 |
N114131 |
4 |
N113885A10 |
408/1/30053/000 |
N114131 |
5 |
N12581 |
408/1/30053/000 |
N114131 |
6 |
N121354A |
408/1/50843/000 |
N118677 |
2nd Digit of XXX
2nd Digit |
Number Plate |
0 |
Non Director |
1 |
New Zealand |
2 |
Egyptian & English |
3 |
Chinese & English |
4 |
Canadian |
5 |
Libyan |
6 |
Silver Gilt with Chaplets |
7 |
Non Director with Special Oil No. 2 |
8 |
Persia |
9 |
India |
3rd Digit of XXX
3rd Digit |
Ratio |
F.P.S. Speed |
0 |
2:1 |
10 |
1 |
1.5:1 |
10 |
2 |
1.5:1 |
8 to 9 |
3 |
1.6:1 |
10 |
4 |
4:1 |
11.5 |
5 |
1:1 |
11.5 |
6 |
64.6 to 68.6 break |
10 |
7 |
2:3 |
10 to 11 |
8 |
2:1 |
20 |
9 |
66 to 68 break |
12 |