Leeds Northrup

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Leeds  Northrup 1091 Decade Mica Capacitor
Leeds Northrup 1091 Decade Mica Capacitor
$53.99
quality
LEEDS  NORTHRUP 9912 RUN UP BOX
LEEDS NORTHRUP 9912 RUN UP BOX
$49.89
quality
Vintage Leeds  Northrup Microfarad Capacitor Model 526
Vintage Leeds Northrup Microfarad Capacitor Model 526
$89.99
quality
Leeds  Northrup Millivolt Potentiometers 8691 2 With Manual Built in Carry Box
Leeds Northrup Millivolt Potentiometers 8691 2 With Manual Built in Carry Box
$64.95
quality
Leeds  Northrup 4801 01 03 22 088 Conductivity Cell w Temp Compensator NEW
Leeds Northrup 4801 01 03 22 088 Conductivity Cell w Temp Compensator NEW
$295.00
quality
Leeds  Northrup 660912 Speedomax H Chart Paper
Leeds Northrup 660912 Speedomax H Chart Paper
$13.95
quality
VINTAGE LEEDS  NORTHRUP 9838 GUARDED NANOVOLT DETECTOR
VINTAGE LEEDS NORTHRUP 9838 GUARDED NANOVOLT DETECTOR
$60.00
quality
VINTAGE LEEDS  NORTHRUP 8690 2 MALLIVOLT POTENTIOMETER
VINTAGE LEEDS NORTHRUP 8690 2 MALLIVOLT POTENTIOMETER
$50.00
quality
LEEDS  NORTHRUP 4395 100000  VOLTAGE DIVIDER
LEEDS NORTHRUP 4395 100000 VOLTAGE DIVIDER
$175.00
quality
VINTAGE LEEDS  NORTHRUP 8691 2 MALLIVOLT POTENTIOMETER
VINTAGE LEEDS NORTHRUP 8691 2 MALLIVOLT POTENTIOMETER
$60.00
quality
VINTAGE LEEDS  NORTHRUP 8696 MALLIVOLT POTENTIOMETER
VINTAGE LEEDS NORTHRUP 8696 MALLIVOLT POTENTIOMETER
$50.00
quality
VINTAGE LEEDS  NORTHRUP 8690 MALLIVOLT POTENTIOMETER
VINTAGE LEEDS NORTHRUP 8690 MALLIVOLT POTENTIOMETER
$50.00
quality
Leeds Northrup Temperature Controller Model 2402 Primary Output 4 20mA
Leeds Northrup Temperature Controller Model 2402 Primary Output 4 20mA
$75.00
quality
VINTAGE LEEDS AND NORTHRUP POTENTIOMETER LAB TESTER
VINTAGE LEEDS AND NORTHRUP POTENTIOMETER LAB TESTER
$25.00
quality
LEEDS  NORTHRUP 1912 1 51 1 010 010 020 D P TRANSMITTER 120 VOLT USED
LEEDS NORTHRUP 1912 1 51 1 010 010 020 D P TRANSMITTER 120 VOLT USED
$50.01
quality
Vintage Leeds  Northrup Kohlrausch Slide Wire Cat 4258
Vintage Leeds Northrup Kohlrausch Slide Wire Cat 4258
$29.99
quality
LEEDS NORTHRUP 448 112 5 51 A500 CENTRY 24V DC CONTROLLER D537380
LEEDS NORTHRUP 448 112 5 51 A500 CENTRY 24V DC CONTROLLER D537380
$123.53
quality
VINTAGE LEEDS  NORTHRUP RESISTANCE BRIDGE 4764 STEAMPUNK
VINTAGE LEEDS NORTHRUP RESISTANCE BRIDGE 4764 STEAMPUNK
$79.99
quality
Leeds  Northrup Speedomax XL Recorder 600 Series Direction Operating Manual
Leeds Northrup Speedomax XL Recorder 600 Series Direction Operating Manual
$32.80
quality
Leeds  Northrup Speedomax W L for OneTwo Pen Recorders Operating Manual
Leeds Northrup Speedomax W L for OneTwo Pen Recorders Operating Manual
$14.40
quality
Leeds  Northrup Speedomax W Parts Catalog 179018
Leeds Northrup Speedomax W Parts Catalog 179018
$17.60
quality
Leeds  Northrup Speedomax W with Series 80 Controller Operating Manual
Leeds Northrup Speedomax W with Series 80 Controller Operating Manual
$17.60
quality
Leeds  Northrup Speedomax W with Series 60 Controller Operating Manual
Leeds Northrup Speedomax W with Series 60 Controller Operating Manual
$16.80
quality
LEEDS  NORTHRUP SINGLE RANGE POTENTIOMETER INDICATOR IN WOODEN CASE
LEEDS NORTHRUP SINGLE RANGE POTENTIOMETER INDICATOR IN WOODEN CASE
$71.95
quality
Leeds Northrup Millivolt potentiometer 1120272 Oak Case nice cond un tested
Leeds Northrup Millivolt potentiometer 1120272 Oak Case nice cond un tested
$30.00
quality
LEEDS  NORTHRUP 070239 METER NIB
LEEDS NORTHRUP 070239 METER NIB
$56.50
quality
Leeds  Northrup 8690 2 Millivolt Potentiometer Direction Operating Manual
Leeds Northrup 8690 2 Millivolt Potentiometer Direction Operating Manual
$15.20
quality
Leeds  Northrup 8690 Millivolt Potentionmeter Directions Operating Manual
Leeds Northrup 8690 Millivolt Potentionmeter Directions Operating Manual
$15.20
quality
Leeds  Northrup 8667 Potentiometer Directions Operating Manual
Leeds Northrup 8667 Potentiometer Directions Operating Manual
$15.20
quality
Leeds  Northrup 8662 Portable Precision Potentiometer Direction Operating Book
Leeds Northrup 8662 Portable Precision Potentiometer Direction Operating Book
$15.20
quality
Leeds  Northrup Fanfold Chart Paper 677001
Leeds Northrup Fanfold Chart Paper 677001
$12.00
quality
Leeds Northrup Guarded Constant Voltage Power Supply Cat  9878 L
Leeds Northrup Guarded Constant Voltage Power Supply Cat 9878 L
$30.00
quality
Leeds  Northrup 8411 Fixed Temperature Standard Direction Operating Manual
Leeds Northrup 8411 Fixed Temperature Standard Direction Operating Manual
$15.20
quality
Leeds  Northrup 8401 Constant Temperature Oil Bath Assembly Operating Manual
Leeds Northrup 8401 Constant Temperature Oil Bath Assembly Operating Manual
$16.00
quality
Leeds  Northrup 8248 8249 Rotary Selector Switches Operating Manual
Leeds Northrup 8248 8249 Rotary Selector Switches Operating Manual
$15.20
quality
Leeds  Northrup Chart Recorder mdl 201 11 000 NN21
Leeds Northrup Chart Recorder mdl 201 11 000 NN21
$143.98
quality
Leeds  Northrup 1 OHM Resistance Standard FE11
Leeds Northrup 1 OHM Resistance Standard FE11
$130.48
quality
Leeds  Northrup 1 OHM Resistance Standard FE12
Leeds Northrup 1 OHM Resistance Standard FE12
$143.98
quality
Leeds  Northrup 10 OHM Resistance Standard FE8
Leeds Northrup 10 OHM Resistance Standard FE8
$143.98
quality
LEEDS  NORTHRUP OUTPUT BOARD ASSEMBLY 046313 NEW NO BOX
LEEDS NORTHRUP OUTPUT BOARD ASSEMBLY 046313 NEW NO BOX
$245.00
quality
Leeds Northrup 4222 resistor Untested As is
Leeds Northrup 4222 resistor Untested As is
$249.99
quality
New old Stock Leeds  Northrup SPDT Synchronous Converter 354156
New old Stock Leeds Northrup SPDT Synchronous Converter 354156
$13.99
quality
LEEDS  NORTHRUP RUN UP BOX 9912
LEEDS NORTHRUP RUN UP BOX 9912
$49.99
quality
Leeds  Northrup Millivolt Testing Unit Reactor MTR Real Inst 1138212
Leeds Northrup Millivolt Testing Unit Reactor MTR Real Inst 1138212
$139.68
quality
INCOLN THERMAL CONVERTER CW10 LEEDS  NORTHRUP
INCOLN THERMAL CONVERTER CW10 LEEDS NORTHRUP
$9.99
quality
Leeds  Northrup 9828 DC Null Detector
Leeds Northrup 9828 DC Null Detector
$299.99
quality
Leeds  Northrup 012228 Wire Slide
Leeds Northrup 012228 Wire Slide
$13.95
quality
Leeds and Northrup 10000 Ohm Cat No 4040 B Resistors
Leeds and Northrup 10000 Ohm Cat No 4040 B Resistors
$65.31
quality
Vintage Leeds  Northrup 2239E Galvanometer 1920 era With iron stand 69
Vintage Leeds Northrup 2239E Galvanometer 1920 era With iron stand 69
$62.10
quality
Test Set Leeds  Northrup No 5305 CTAM 9255
Test Set Leeds Northrup No 5305 CTAM 9255
$65.00
quality
NEW Leeds  Northrup 031308 20 Point Resistor FREE SHIPPING
NEW Leeds Northrup 031308 20 Point Resistor FREE SHIPPING
$27.99
quality
LEEDS  NORTHRUP SPEEDOMAX CHART RECORDER
LEEDS NORTHRUP SPEEDOMAX CHART RECORDER
$99.95
quality
Leeds  Northrup Electronic Speed Changer 120V 50 60 Hz 351567
Leeds Northrup Electronic Speed Changer 120V 50 60 Hz 351567
$143.56
quality
LEEDS  NORTHRUP SPEEDOMAX 063205 CHART RECORDER
LEEDS NORTHRUP SPEEDOMAX 063205 CHART RECORDER
$149.99
quality
Vintage Leeds  Northrup 2430 D Reflecting Galvanometer Type E Light Beam
Vintage Leeds Northrup 2430 D Reflecting Galvanometer Type E Light Beam
$99.95
quality
VINTAGE LEEDS  NORTHRUP 8690 2 MILLIVOLT POTENTIOMETER GALVANOMETER AS IS
VINTAGE LEEDS NORTHRUP 8690 2 MILLIVOLT POTENTIOMETER GALVANOMETER AS IS
$17.99
quality
NEW Leeds  Northrup Amplifier Prod No 801208
NEW Leeds Northrup Amplifier Prod No 801208
$175.00
quality
LEEDS  NORTHRUP 4760 WHEATSTONE BRIDGE DECADE RESISTANCE BOX FREE SHIPPING
LEEDS NORTHRUP 4760 WHEATSTONE BRIDGE DECADE RESISTANCE BOX FREE SHIPPING
$145.00
quality
Vintage Leeds  Northrup Testing Set 5300 Resistance Measurement Device
Vintage Leeds Northrup Testing Set 5300 Resistance Measurement Device
$95.00
quality
Leeds Northrup Co Millivolt Potentiometer
Leeds Northrup Co Millivolt Potentiometer
$99.99
quality
Leeds  Northrup 8693 2 Temperature Potentiometer
Leeds Northrup 8693 2 Temperature Potentiometer
$19.99
quality
Leeds  Northrup 4286 Kelvin Bridge Ohmmeter
Leeds Northrup 4286 Kelvin Bridge Ohmmeter
$39.99
quality
VINTAGE LEEDS  NORTHRUP STUDENTS POTENTIOMETER MN 7645
VINTAGE LEEDS NORTHRUP STUDENTS POTENTIOMETER MN 7645
$44.99
quality
LEEDS NORTHRUP AC DC DECADE RESISTOR CAT NO 4755
LEEDS NORTHRUP AC DC DECADE RESISTOR CAT NO 4755
$49.99
quality
LEEDS NORTHRUP AC DC DECADE RESISTOR 4754 AC DC
LEEDS NORTHRUP AC DC DECADE RESISTOR 4754 AC DC
$59.99
quality
LEEDS NORTHRUP 078160 CIRCUIT BOARD LOGIC CARD NEW NOS 149
LEEDS NORTHRUP 078160 CIRCUIT BOARD LOGIC CARD NEW NOS 149
$134.10
quality
Leeds  Northrup Station Auto Manual
Leeds Northrup Station Auto Manual
$151.00
quality
LEEDS  NORTHRUP 064147 FABRICATING BENCH TOOL THERMOCOUPLER CRIMPING TOOL
LEEDS NORTHRUP 064147 FABRICATING BENCH TOOL THERMOCOUPLER CRIMPING TOOL
$149.99
quality
LEEDS NORTHRUP 10970 4 ELECTRO PNEUMATIC CONVERTER 4 20MADC 3 15PSI D546366
LEEDS NORTHRUP 10970 4 ELECTRO PNEUMATIC CONVERTER 4 20MADC 3 15PSI D546366
$23.53
quality
LEEDS  NORTHRUP RESISTORS 1 OHM A9
LEEDS NORTHRUP RESISTORS 1 OHM A9
$75.00
quality
LEEDS  NORTHRUP RESISTORS 1 OHM C7
LEEDS NORTHRUP RESISTORS 1 OHM C7
$75.00
quality
LEEDS  NORTHRUP RESISTORS 1 OHM E5
LEEDS NORTHRUP RESISTORS 1 OHM E5
$75.00
quality
19 Leeds  Northrup Speedomax Mini Recorder Chart Paper
19 Leeds Northrup Speedomax Mini Recorder Chart Paper
$149.00
quality
LEEDS  NORTHRUP RESISTORS 1 OHM D6
LEEDS NORTHRUP RESISTORS 1 OHM D6
$75.00
quality
Leeds  Northrup 8845 C 30 Rayotube Infrared Temp Detector W Thermostat 120V
Leeds Northrup 8845 C 30 Rayotube Infrared Temp Detector W Thermostat 120V
$149.99
quality
Leeds  Northrup Manual 4397 M Voltage Divider Resistive Instruction Manual
Leeds Northrup Manual 4397 M Voltage Divider Resistive Instruction Manual
$15.20
quality
NEW LEEDS  NORTHRUP 445932 INPUT SELECTOR BOARD
NEW LEEDS NORTHRUP 445932 INPUT SELECTOR BOARD
$275.00
quality
Leeds  Northrup Instruments Transmitter 2630 105 11 0 01 809 263010511001809
Leeds Northrup Instruments Transmitter 2630 105 11 0 01 809 263010511001809
$275.00
quality
LEEDS  NORTHRUP SERIES 60 CONTROL 354163
LEEDS NORTHRUP SERIES 60 CONTROL 354163
$195.00
quality
Leeds and Northrup Co Type G 1 Mueller Temperature Bridge 8067
Leeds and Northrup Co Type G 1 Mueller Temperature Bridge 8067
$776.00
quality
Leeds  Northrup MICROMAX CHART RECORDER
Leeds Northrup MICROMAX CHART RECORDER
$750.00
quality
LEEDS  NORTHRUP VOLT POTENTIOMETER 8687
LEEDS NORTHRUP VOLT POTENTIOMETER 8687
$75.00
quality
VINTAGE LEEDS  NORTHRUP 8686 S WITH FLUKE 840 A POTENTIOMETER
VINTAGE LEEDS NORTHRUP 8686 S WITH FLUKE 840 A POTENTIOMETER
$140.00
quality
LEEDS  NORTHRUP RESISTANCE THEMOMETER BRIDGE 8064 A
LEEDS NORTHRUP RESISTANCE THEMOMETER BRIDGE 8064 A
$105.00
quality
LEEDS AND NORTHRUP 8686 IS A MILLIVOLT POTENTIOMETER
LEEDS AND NORTHRUP 8686 IS A MILLIVOLT POTENTIOMETER
$50.00
quality
LEEDS  NORTHRUP Model 7555 TYPE K 5 POTENTIOMETER
LEEDS NORTHRUP Model 7555 TYPE K 5 POTENTIOMETER
$195.00
quality
LEEDS  NORTHRUP K5 9534 L5 UNBALANCED 750 ATTENUATOR
LEEDS NORTHRUP K5 9534 L5 UNBALANCED 750 ATTENUATOR
$125.00
quality
VINTAGE LEEDS  NORTHRUP RESISTANCE BRIDGE 4764
VINTAGE LEEDS NORTHRUP RESISTANCE BRIDGE 4764
$150.00
quality
LEEDS  NORTHRUP Model 7554 TYPE K 4 POTENTIOMETER
LEEDS NORTHRUP Model 7554 TYPE K 4 POTENTIOMETER
$185.00
quality
LEEDS  NORTHRUP 7556 AND 7556 1 GUARDED SIX DIAL POTENTIOMETERS DIRECTIONS
LEEDS NORTHRUP 7556 AND 7556 1 GUARDED SIX DIAL POTENTIOMETERS DIRECTIONS
$24.97
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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