Leeds Northrup

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LEEDS NORTHRUP A1A1A3A2 445848 PROGRAM PANEL RECORDER PCB CIRCUIT BOARD B220865
LEEDS NORTHRUP A1A1A3A2 445848 PROGRAM PANEL RECORDER PCB CIRCUIT BOARD B220865
$100.00
quality
LEEDS NORTHRUP STUDENTS POTENTIOMETER MODEL 7645 VINTAGE
LEEDS NORTHRUP STUDENTS POTENTIOMETER MODEL 7645 VINTAGE
$80.00
quality
LEEDS AND NORTHRUP CONDUCTIVITY ASSEMBLY NEW
LEEDS AND NORTHRUP CONDUCTIVITY ASSEMBLY NEW
$31.20
quality
Leeds Northrup 7661 PH Volt Scientific Test Instrument Galvanometer Laboratory
Leeds Northrup 7661 PH Volt Scientific Test Instrument Galvanometer Laboratory
$65.00
quality
Leeds  Northrup Controller 6432 4 4001 802 3 20 31716
Leeds Northrup Controller 6432 4 4001 802 3 20 31716
$218.90
quality
Leeds and Northrup A19 030219 100460 CBR0215
Leeds and Northrup A19 030219 100460 CBR0215
$295.00
quality
Leeds Northrup Interface Board 205176
Leeds Northrup Interface Board 205176
$198.00
quality
TM 4200 LEEDS AND NORTHRUP CAT  2610 100 11 0 01 000 TRANSMITTER
TM 4200 LEEDS AND NORTHRUP CAT 2610 100 11 0 01 000 TRANSMITTER
$49.00
quality
Leeds Northrup PA Interface 205221
Leeds Northrup PA Interface 205221
$249.00
quality
Leeds Northrup PA Interface 205221
Leeds Northrup PA Interface 205221
$249.00
quality
Leeds Northrup Logic CD Board 201176
Leeds Northrup Logic CD Board 201176
$695.00
quality
Leeds Northrup Circuit Board 064556 9014008 A18
Leeds Northrup Circuit Board 064556 9014008 A18
$495.00
quality
LEEDS  NORTHRUP TESTING SET 5300 USED
LEEDS NORTHRUP TESTING SET 5300 USED
$100.00
quality
Leeds and Northrup Company 4905 Series Conductivity Cell 4905 50 44 088 7
Leeds and Northrup Company 4905 Series Conductivity Cell 4905 50 44 088 7
$149.00
quality
Leeds  Northrup Processor Data PC Board A18 054906
Leeds Northrup Processor Data PC Board A18 054906
$395.00
quality
Leeds Northrup Mini Station Board A9 030289
Leeds Northrup Mini Station Board A9 030289
$295.00
quality
Leeds and Northrup Conductivity Cell 4905 Series 4905 1 44 092 7
Leeds and Northrup Conductivity Cell 4905 Series 4905 1 44 092 7
$149.00
quality
Leeds Northrup Adjusting Current Board A3 054907
Leeds Northrup Adjusting Current Board A3 054907
$295.00
quality
Leeds  Northrup 074825 CAT Manual Station 120 220V 4A
Leeds Northrup 074825 CAT Manual Station 120 220V 4A
$49.99
quality
LEEDS  NORTHRUP MODEL 4300 PRIMARY VARIABLE LOW RESISTANCE STANDARD
LEEDS NORTHRUP MODEL 4300 PRIMARY VARIABLE LOW RESISTANCE STANDARD
$1,100.00
quality
Leeds  Northrup Temperature Potientiometer 8693 2 Vintage
Leeds Northrup Temperature Potientiometer 8693 2 Vintage
$136.49
quality
LEEDS  NORTHRUP MODEL 8690 MILLIVOLT POTENTIOMETER
LEEDS NORTHRUP MODEL 8690 MILLIVOLT POTENTIOMETER
$51.12
quality
LEEDS  NORTHRUP TEMPERATURE POTENTIOMETER GALVANOMETER 8693
LEEDS NORTHRUP TEMPERATURE POTENTIOMETER GALVANOMETER 8693
$99.99
quality
Vintage Leeds  Northrup L  N Potentiometer in Wood Case
Vintage Leeds Northrup L N Potentiometer in Wood Case
$150.00
quality
Leeds  Northrup Millivolt Testing Unit Reactor MTR Real Inst 1138212
Leeds Northrup Millivolt Testing Unit Reactor MTR Real Inst 1138212
$235.43
quality
LEEDS  NORTHRUP 7022NNN OXYGEN MONITOR TRANSMITTER
LEEDS NORTHRUP 7022NNN OXYGEN MONITOR TRANSMITTER
$764.00
quality
LEEDS  NORTHRUP SYNCHRONOUS CONVERTER 354233
LEEDS NORTHRUP SYNCHRONOUS CONVERTER 354233
$80.00
quality
Leeds Northrup Circuit Board 2339 532 2
Leeds Northrup Circuit Board 2339 532 2
$195.00
quality
LEEDS AND NORTHRUP THEMOCOUPLE MODEL 3061 1 T 2 15 50 2 0 1 NEW
LEEDS AND NORTHRUP THEMOCOUPLE MODEL 3061 1 T 2 15 50 2 0 1 NEW
$23.20
quality
Leeds Northrup Circuit Board A18 054906
Leeds Northrup Circuit Board A18 054906
$259.00
quality
Leeds  Northrup Control Station Model A 423 21 11 205
Leeds Northrup Control Station Model A 423 21 11 205
$98.00
quality
LEEDS NORTHRUP 8690 MILLIVOLT POTENTIOMETER GALVANOMETER
LEEDS NORTHRUP 8690 MILLIVOLT POTENTIOMETER GALVANOMETER
$95.00
quality
Leeds Northrup 650925
Leeds Northrup 650925
$50.00
quality
LEEDS  NORTHRUP 228261 USED CENTRAL PROCESS BOARD 228261
LEEDS NORTHRUP 228261 USED CENTRAL PROCESS BOARD 228261
$590.00
quality
LEEDS  NORTHRUP 074431 NEW CONTROL BOARD 074431
LEEDS NORTHRUP 074431 NEW CONTROL BOARD 074431
$350.00
quality
LEEDS  NORTHRUP 074431 USED CONTROL BOARD 074431
LEEDS NORTHRUP 074431 USED CONTROL BOARD 074431
$175.00
quality
LEEDS  NORTHRUP SPEEDOMAX CHART  H  RECORDER
LEEDS NORTHRUP SPEEDOMAX CHART H RECORDER
$700.00
quality
LEEDS  NORTHRUP SPEEDOMAX CHART RECORDER PAPER  663810 T1
LEEDS NORTHRUP SPEEDOMAX CHART RECORDER PAPER 663810 T1
$20.00
quality
LEEDS  NORTHRUP 074867 USED COMPUTER CARD 074867
LEEDS NORTHRUP 074867 USED COMPUTER CARD 074867
$65.00
quality
LEEDS  NORTHRUP LN MICROMAX CONTROL BOARD 074431
LEEDS NORTHRUP LN MICROMAX CONTROL BOARD 074431
$250.00
quality
Leeds  Northrup Co Optical Pyrometer SN 332148
Leeds Northrup Co Optical Pyrometer SN 332148
$59.99
quality
LEEDS  NORTHRUP CO POTENTIOMETER SN 315906
LEEDS NORTHRUP CO POTENTIOMETER SN 315906
$79.99
quality
Leeds Northrup Program Module 025390
Leeds Northrup Program Module 025390
$29.00
quality
LEEDS  NORTHRUP 4385 SHUNT BOX CALIBRATED
LEEDS NORTHRUP 4385 SHUNT BOX CALIBRATED
$150.00
quality
VINTAGE LEEDS  NORTHRUP SELF INDUCTANCE Tester Milli Henrys
VINTAGE LEEDS NORTHRUP SELF INDUCTANCE Tester Milli Henrys
$65.00
quality
LEEDS  NORTHRUP PH LEVEL MONITORING METER UNIT 2033
LEEDS NORTHRUP PH LEVEL MONITORING METER UNIT 2033
$79.99
quality
LEEDS NORTHRUP 8693 TEMPERATURE POTENTIOMETER 15V AC 1 2MV AC 1MA B336380
LEEDS NORTHRUP 8693 TEMPERATURE POTENTIOMETER 15V AC 1 2MV AC 1MA B336380
$125.00
quality
LEEDS NORTHRUP 8691 MILLIVOLT POTENTIOMETER 15V AC 0 111 MV AC B336389
LEEDS NORTHRUP 8691 MILLIVOLT POTENTIOMETER 15V AC 0 111 MV AC B336389
$125.00
quality
Leeds  Northrup Electromax Controller
Leeds Northrup Electromax Controller
$116.95
quality
LEEDS  NORTHRUP LN MICROMAX CONTROL BOARD 078691
LEEDS NORTHRUP LN MICROMAX CONTROL BOARD 078691
$300.00
quality
LEEDS  NORTHRUP LN MICROMAX CONTROL BOARD 228261 074413
LEEDS NORTHRUP LN MICROMAX CONTROL BOARD 228261 074413
$800.00
quality
LEEDS  NORTHRUP THOMAS 1 ONE OHM 4210 STANDARD
LEEDS NORTHRUP THOMAS 1 ONE OHM 4210 STANDARD
$460.00
quality
LEEDS  NORTHRUP LN MICROMAX CONTROL BOARD 228289 074413
LEEDS NORTHRUP LN MICROMAX CONTROL BOARD 228289 074413
$1,400.00
quality
Leeds  Northrup 7410 meter
Leeds Northrup 7410 meter
$100.00
quality
LN LEEDS  NORTHRUP PC CONTROL CIRCUIT BOARD CARD 046315 NAPC 2 NAPC2 8401
LN LEEDS NORTHRUP PC CONTROL CIRCUIT BOARD CARD 046315 NAPC 2 NAPC2 8401
$50.00
quality
Leeds  Northrup 0 1500F Range Card 650019 Type J
Leeds Northrup 0 1500F Range Card 650019 Type J
$40.00
quality
Leeds  Northrup 0 1000F Range Card 650003 Type J
Leeds Northrup 0 1000F Range Card 650003 Type J
$40.00
quality
LEEDS  NORTHRUP ELECTRIC MOTOR HOLTZER CABOT RBT2505 017200 120 VOLTS
LEEDS NORTHRUP ELECTRIC MOTOR HOLTZER CABOT RBT2505 017200 120 VOLTS
$29.99
quality
Leeds And Northrup Speedomax Event Marker tag 98
Leeds And Northrup Speedomax Event Marker tag 98
$150.00
quality
NEW Leeds and Northrup STD 3338 2A Converter Synchronous Inverter Vibrator NEW
NEW Leeds and Northrup STD 3338 2A Converter Synchronous Inverter Vibrator NEW
$24.00
quality
Leeds  Northrup Model 8686 Millivolt potentiometer
Leeds Northrup Model 8686 Millivolt potentiometer
$65.00
quality
LEEDS  NORTHRUP 4973 01 202 7 000 CONDUCTIVITY CELL
LEEDS NORTHRUP 4973 01 202 7 000 CONDUCTIVITY CELL
$150.00
quality
Leeds  Northrup Systems 564 9 0 R Relay Output Module B16 064319
Leeds Northrup Systems 564 9 0 R Relay Output Module B16 064319
$195.00
quality
LEEDS  NORTHRUP VIDEO RECORDER
LEEDS NORTHRUP VIDEO RECORDER
$300.00
quality
LEEDS NORTHRUP 445856 A1A1A2X 196456 B1 PCB CIRCUIT BOARD B406593
LEEDS NORTHRUP 445856 A1A1A2X 196456 B1 PCB CIRCUIT BOARD B406593
$51.00
quality
Leeds And Northrup Volt Box 7592
Leeds And Northrup Volt Box 7592
$9.95
quality
LEEDS NORTHRUP 018484 575015K 0 800F C PCB CIRCUIT BOARD B406600
LEEDS NORTHRUP 018484 575015K 0 800F C PCB CIRCUIT BOARD B406600
$37.00
quality
NIB LEEDS NORTHRUP RELAY ALARM OUTPUT RELAY 056857
NIB LEEDS NORTHRUP RELAY ALARM OUTPUT RELAY 056857
$199.20
quality
LEEDS NORTHRUP 018484 575468T 0 40C L PCB CIRCUIT BOARD B406639
LEEDS NORTHRUP 018484 575468T 0 40C L PCB CIRCUIT BOARD B406639
$37.00
quality
LEEDS  NORTHRUP ELECTROMAX III
LEEDS NORTHRUP ELECTROMAX III
$29.99
quality
Leeds  Northrup Fault Location In Cables Manual Circa 1943 Original
Leeds Northrup Fault Location In Cables Manual Circa 1943 Original
$17.99
quality
LEEDS  NORTHRUP CONDUCTIVITY CELL 4973 1 202 7
LEEDS NORTHRUP CONDUCTIVITY CELL 4973 1 202 7
$100.00
quality
Leeds  Northrup Star I Industrial Controller
Leeds Northrup Star I Industrial Controller
$100.00
quality
HONEYWELL LEEDS  NORTHRUP 173057 POWER MODULE
HONEYWELL LEEDS NORTHRUP 173057 POWER MODULE
$349.99
quality
Leeds Northrup 7073 1 03 105 6 50 129
Leeds Northrup 7073 1 03 105 6 50 129
$202.50
quality
Leeds  Northrup S 40000 Series Micromax Parts Catalog Manual Original
Leeds Northrup S 40000 Series Micromax Parts Catalog Manual Original
$19.99
quality
Leeds  Northrup S 40000 Series Micromax Instruction Manual Original
Leeds Northrup S 40000 Series Micromax Instruction Manual Original
$19.99
quality
Leeds  Northrup S 60000 Series Speedomax G Recorders Instruction Manual
Leeds Northrup S 60000 Series Speedomax G Recorders Instruction Manual
$17.99
quality
Leeds  Northrup S 60000 Series Speedomax G Recorders Parts Catalog Manual
Leeds Northrup S 60000 Series Speedomax G Recorders Parts Catalog Manual
$19.99
quality
Leeds  Northrup Model S Speedomax G Operator Service Manual Original
Leeds Northrup Model S Speedomax G Operator Service Manual Original
$17.99
quality
H3 3 1 NEW LEEDS  NORTHRUP 056316 PANEL VIEW
H3 3 1 NEW LEEDS NORTHRUP 056316 PANEL VIEW
$1,242.11
quality
NEW LEEDS NORTHRUP TEMP TRANSMITTER 479 43 160 601 0 TO 500 F TYPE JTC NNB
NEW LEEDS NORTHRUP TEMP TRANSMITTER 479 43 160 601 0 TO 500 F TYPE JTC NNB
$44.99
quality
NEW LEEDS NORTHRUP PH MEASURING ELECTRODE ANTIMONY 117399 NEW IN BOX
NEW LEEDS NORTHRUP PH MEASURING ELECTRODE ANTIMONY 117399 NEW IN BOX
$49.99
quality
Leeds  Northrup 078691 Control Board LN
Leeds Northrup 078691 Control Board LN
$325.00
quality
Honeywell Leeds  Northrup 074441 Control Board LN
Honeywell Leeds Northrup 074441 Control Board LN
$365.00
quality
Leeds  Northrup 228202 Control Board LN
Leeds Northrup 228202 Control Board LN
$499.00
quality
Honeywell Leeds  Northrup 074419 Control Board LN
Honeywell Leeds Northrup 074419 Control Board LN
$675.00
quality
Leeds  Northrup 471 Transmitter w Amtek Temp Sensor
Leeds Northrup 471 Transmitter w Amtek Temp Sensor
$325.00
quality
New Leeds  Northrup 703 Triple Range 96 178599 2 1 A Unit Of General Signal
New Leeds Northrup 703 Triple Range 96 178599 2 1 A Unit Of General Signal
$128.88
quality
Vintage 1940s Leeds  Northrup Test Set No 5430 A Wheatstone Bridge Wood Box
Vintage 1940s Leeds Northrup Test Set No 5430 A Wheatstone Bridge Wood Box
$58.99
quality
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Leeds Northrup

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All My STUFF !!!!!!!!!!!!! Part 18

History Of UK Car Registrations

Number Plate History
brief history of the u.k. car number plate system
"The Motor Car Act 1903" started everything off .It said that every car had to be registered with a county council or county borough council, and every car had to display a unique identifying number issued to them by such a council .
Initially each council was issued one letter to use on the number plates , they could not have known how popular the motor car was to become and as the number of cars increased they quickly ran out of combinations ,so they started to use two and then three letter combinations.
By 1963 several councils were close to the end of their allocation, so a 7th digit was added to the Number Plate System. This extra digit was a letter ,so post 1963 numbers had three letters then a space then up to 3 numbers and then another letter this last letter gave the age of the car.
Suffix Number Plate System
The Suffix Number Plate System
Table of "Age identifier " Suffix Letters.
A 1 Jan 63 - 31 Dec 63 H 1 Aug 69 - 31 Jul 70 R 1 Aug 76 - 31 Jul 77
B 1 Jan 64 - 31 Dec 64 J 1 Aug 70 - 31 Jul 71 S 1 Aug 77 - 31 Jul 78
C 1 Jan 65 - 31 Dec 65 K 1 Aug 71 - 31 Jul 72 T 1 Aug 78 - 31 Jul 79
D 1 Jan 66 - 31 Dec 66 L 1 Aug 72 - 31 Jul 73 V 1 Aug 79 - 31 Jul 80
E 1 Jan 67 - 31 Jul 67 M 1 Aug 73 - 31 Jul 74 W 1 Aug 80 - 31 Jul 81
F 1 Aug 67 - 31 Jul 68 N 1 Aug 74 - 31 Jul 75 X 1 Aug 81 - 31 Jul 82
G 1 Aug 68 - 31 Jul 69 P 1 Aug 75 - 31 Jul 76 Y 1 Aug 82 - 31 Jul 83
You may notice that a further complication to the number system came in 1967 when , under pressure from the motor car industry the changeover date was moved to August in an attempt to smooth out new car puchasing by the public.
It may also be noted that the letters I and Z ( used for N.Ireland) are missing as are Q ( reserved for kit cars and repaired write offs etc) and the letter U ( reason unknown).

The letters I Q Z O and U were never used as a suffix letter in fact I Q and Z were never used at all.
By 1983 they faced the same problem but deftly extended the system by reversing the number plate giving a letter first then up to 3 numbers then a space then 3 more letters. The first letter now gave the age of the car.
Prefix number plate system
The Prefix Number Plate System
Table of "Age identifier " Prefix Letters.
A 1 Aug 83 - 31 Jul 84 H 1 Aug 90 - 31 Jul 91 R 1 Aug 97 - 31 Jul 98
B 1 Aug 84 - 31 Jul 85 J 1 Aug 91 - 31 Jul 92 S 1 Aug 98 - 28 Feb 99
C 1 Aug 85 - 31 Jul 86 K 1 Aug 92 - 31 Jul 93 T 1 Mar 99 - 31 Aug 99
D 1 Aug 86 - 31 Jul 87 L 1 Aug 93 - 31 Jul 94 V 1 Sep 99 - 29 Feb 00
E 1 Aug 87 - 31 Jul 88 M 1 Aug 94 - 31 Jul 95 W 1 Mar 00 - 31 Aug 00
F 1 Aug 88 - 31 Jul 89 N 1 Aug 95 - 31 Jul 96 X 1 Sep 00 - 28 Feb 01
G 1 Aug 89 - 31 Jul 90 P 1 Aug 96 - 31 Jul 97 Y 1 Mar 01 - 31 Aug 01
It may be noted that the letters I and Z ( used for N.Ireland) are missing as are Q ( reserved for kit cars and repaired write offs etc) and the letter U ( reason unknown).

By 2001 the problem was looming again and the current system was introduced. Now each number plate has 7 digits and the first two letters give the region of the country where the car was first registered, followed by two numbers which give the age of the car and then three random letters . An example of this could be NE51 XXX. The NE tells you the car is from the North East of England (a table of these region identifiers is below ). The 51 tells you it was registered in September 2001 and the last three letters mean nothing.
Current Number Plate system
Current U.K. Number Plates System
The first two digits of each car registration denote the area of the country where the vehicle was first registered.
First Letter Issuing office Second Letter Possibilities
A Peterborough A B C D E F G H J K L M N
Norwich O P R S T U
Ipswich V W X Y
B Birmingham A - Y
C Cardiff A B C D E F G H J K L M N O
Swansea P R S T U V
Bangor W X Y
D Chester A B C D E F G H J K
Shrewsbury L M N O P R S T U V W X Y
E Chelmsford A - Y
F Nottingham A B C D E F G H J K L M N P
Lincoln R S T V W X Y
G Maidstone A B C D E F G H J K L M N O
Brighton P R S T U V W X Y
H Bournemouth A B C D E F G H J
Portsmouth K L M N O P R S T U V W X Y
HW Reserved for the Isle of Wight
K Luton A B C D E F G H J K L
Northampton M N O P R S T U V W X Y
L Wimbledon A B C D E F G H J
Stanmore K L M N O P R S T
Sidcup U V W X Y
M Manchester A - Y
N Newcastle A B C D E G H J K L M N O
Stockton P R S T U V W X Y
O Oxford A - Y
P Preston A B C D E F G H J K L M N O P R S T
Carlisle U V W X Y
R Reading A - Y
S Glasgow A B C D E F G H J
Edinburgh K L M N O
Dundee P R S T
Aberdeen U V W
Inverness X Y
V Worcester A - Y
W Exeter A B C D E F G H J
Truro K L
Bristol M N O P R S T U V W X Y
Y Leeds A B C D E F G H J K
Sheffield L M N O P R S T U
Beverley V W X YHave a look at my historic rally blog :-
More Historic Rally Information

My business website :-
Private Number Plates

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