Leeds Northrup

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LEEDS NORTHRUP CONTROLLER CIRCUIT BOARD 046304 RARE NEW 399
LEEDS NORTHRUP CONTROLLER CIRCUIT BOARD 046304 RARE NEW 399
$399.00
quality
Vintage Leeds  Northrup Resistance Measurement Device Test Set Model 5300
Vintage Leeds Northrup Resistance Measurement Device Test Set Model 5300
$49.90
quality
Leeds and Northrup chart paper 690112
Leeds and Northrup chart paper 690112
$5.00
quality
VINTAGE LEEDS  NORTHRUP STUDENTS POTENTIOMETER 7645 Multiplier
VINTAGE LEEDS NORTHRUP STUDENTS POTENTIOMETER 7645 Multiplier
$45.00
quality
LEEDS  NORTHRUP WHEELCO INSTRUMENTS PORTABLE POTENTIOMETER SERIES 300 PR4
LEEDS NORTHRUP WHEELCO INSTRUMENTS PORTABLE POTENTIOMETER SERIES 300 PR4
$56.25
quality
12 pcs LEEDS NORTHRUP RESISTORS 001 01 1 1 10 1001 x2 100 1000 10k
12 pcs LEEDS NORTHRUP RESISTORS 001 01 1 1 10 1001 x2 100 1000 10k
$1,199.00
quality
VINTAGE LEEDS  NORTHRUP LN No 5305 TEST SET TEST EQUIPMENT NICE CONDITION
VINTAGE LEEDS NORTHRUP LN No 5305 TEST SET TEST EQUIPMENT NICE CONDITION
$75.00
quality
Vintage LN Leeds Northrup Laboratory Portable Potentiometer w Wood Case 1197235
Vintage LN Leeds Northrup Laboratory Portable Potentiometer w Wood Case 1197235
$178.99
quality
Vintage LN Leeds Northrup Laboratory Portable Potentiometer w Wood Case 1152661
Vintage LN Leeds Northrup Laboratory Portable Potentiometer w Wood Case 1152661
$178.99
quality
Vintage Leeds  Northrup 8686 Millivolt Potentiometer with manual
Vintage Leeds Northrup 8686 Millivolt Potentiometer with manual
$29.95
quality
Leeds and Northrup Millivolt Potientiometer
Leeds and Northrup Millivolt Potientiometer
$125.00
quality
LEEDS  NORTHRUP 36172 New in Factory Packaging
LEEDS NORTHRUP 36172 New in Factory Packaging
$148.50
quality
LEEDS  NORTHRUP MONITOR Used
LEEDS NORTHRUP MONITOR Used
$55.35
quality
LEEDS NORTHRUP LN MODEL 8690 MILLIVOLT POTENTIOMETER GALVANOMETER
LEEDS NORTHRUP LN MODEL 8690 MILLIVOLT POTENTIOMETER GALVANOMETER
$48.75
quality
Leeds  Northrup 1151GP8E22B1 Pressure Transmitter
Leeds Northrup 1151GP8E22B1 Pressure Transmitter
$99.99
quality
Vintage Leeds  Northrup Catalog No 2400B Micro Ampere Deflection Meter
Vintage Leeds Northrup Catalog No 2400B Micro Ampere Deflection Meter
$99.00
quality
LEEDS NORTHRUP 3338 10 354042 SPDT SYNCHRONOUS CONVERTER D585414
LEEDS NORTHRUP 3338 10 354042 SPDT SYNCHRONOUS CONVERTER D585414
$14.00
quality
Vintage Leeds  Northrup Co P 240 Galvanonmeter Parts
Vintage Leeds Northrup Co P 240 Galvanonmeter Parts
$19.99
quality
LEEDS  NORTHRUP 8693 TEMPERATURE POTENTIOMETER Inst Man Copy 0446
LEEDS NORTHRUP 8693 TEMPERATURE POTENTIOMETER Inst Man Copy 0446
$75.00
quality
LEEDS  NORTHRUP MANUAL SCANNER UNIT 8239
LEEDS NORTHRUP MANUAL SCANNER UNIT 8239
$159.95
quality
1940s Vintage Leeds And Northrup 7552 Potentiometer In Wood Case
1940s Vintage Leeds And Northrup 7552 Potentiometer In Wood Case
$400.00
quality
LEEDS  NORTHRUP STANDARD CELL NO B6583
LEEDS NORTHRUP STANDARD CELL NO B6583
$26.25
quality
VINTAGE LEEDS  NORTHRUP POTENTIOMETER
VINTAGE LEEDS NORTHRUP POTENTIOMETER
$275.00
quality
VINTAGE LEEDS  NORTHRUP POTENTIOMETER
VINTAGE LEEDS NORTHRUP POTENTIOMETER
$165.00
quality
VINTAGE LEEDS  NORTHRUP POTENTIOMETER
VINTAGE LEEDS NORTHRUP POTENTIOMETER
$275.00
quality
LEEDS  NORTHRUP LN 9828 NULL DETECTOR GUARDED POTENTIOMETER MODEL7556
LEEDS NORTHRUP LN 9828 NULL DETECTOR GUARDED POTENTIOMETER MODEL7556
$175.00
quality
VINTAGE LEEDS  NORTHRUP 8696 MALLIVOLT POTENTIOMETER
VINTAGE LEEDS NORTHRUP 8696 MALLIVOLT POTENTIOMETER
$40.00
quality
LEEDS  NORTHRUP K5 9534 L5 UNBALANCED 750 ATTENUATOR
LEEDS NORTHRUP K5 9534 L5 UNBALANCED 750 ATTENUATOR
$115.00
quality
LEEDS NORTHRUP CAT 4393 UNIVERSAL RATIO SET
LEEDS NORTHRUP CAT 4393 UNIVERSAL RATIO SET
$175.00
quality
VINTAGE LEEDS  NORTHRUP RESISTANCE BRIDGE 4764
VINTAGE LEEDS NORTHRUP RESISTANCE BRIDGE 4764
$115.00
quality
LEEDS  NORTHRUP Model 7554 TYPE K 4 POTENTIOMETER
LEEDS NORTHRUP Model 7554 TYPE K 4 POTENTIOMETER
$165.00
quality
LEEDS NORTHRUP POTENTIOMETER TESTER IN WOODEN BOX
LEEDS NORTHRUP POTENTIOMETER TESTER IN WOODEN BOX
$50.00
quality
LEEDS  NORTHRUP LN DIGITAL CHART RECORDER in BOX LCH1
LEEDS NORTHRUP LN DIGITAL CHART RECORDER in BOX LCH1
$112.50
quality
LEEDS  NORTHRUP LN DIGITAL CHART RECORDER in BOX LCH2
LEEDS NORTHRUP LN DIGITAL CHART RECORDER in BOX LCH2
$75.00
quality
LEEDS  NORTHRUP instruments CONTROLLER general signal
LEEDS NORTHRUP instruments CONTROLLER general signal
$333.00
quality
Leeds  Northrup Volt Box Cat 7592 750 Ohms Volt Vintage Test Equipment
Leeds Northrup Volt Box Cat 7592 750 Ohms Volt Vintage Test Equipment
$49.95
quality
Leeds  Northrup 8687 Volt Potentiometer From University Lab Good Condition
Leeds Northrup 8687 Volt Potentiometer From University Lab Good Condition
$69.95
quality
Leeds  Northrup 8692 Temperature Potentiometer For Use With Thermocouple Vintag
Leeds Northrup 8692 Temperature Potentiometer For Use With Thermocouple Vintag
$49.95
quality
Leeds  Northrup 8690 Millivolt Potentiometer Very Little Wear Vintage
Leeds Northrup 8690 Millivolt Potentiometer Very Little Wear Vintage
$69.95
quality
Leeds  Northrup 8691 2 Millivolt Potentiometer With Thermocouple Tables Booklet
Leeds Northrup 8691 2 Millivolt Potentiometer With Thermocouple Tables Booklet
$69.95
quality
VINTAGE LEEDS  NORTHRUP CO CA RESISTOR BOX PATENTED JUNE 20 1905
VINTAGE LEEDS NORTHRUP CO CA RESISTOR BOX PATENTED JUNE 20 1905
$39.99
quality
Vintage Leeds  Northrup Students Potentiometer 7645
Vintage Leeds Northrup Students Potentiometer 7645
$29.99
quality
Leeds  Northrup Pressure Transmitter
Leeds Northrup Pressure Transmitter
$128.03
quality
LEEDS  NORTHRUP 7075 1 018 120 001 000 SPECIFIC RESISTANCE 120 240 VAC
LEEDS NORTHRUP 7075 1 018 120 001 000 SPECIFIC RESISTANCE 120 240 VAC
$139.99
quality
Leeds and Northrup Millivolt Potentiometer 1618888 Test Equipment CS
Leeds and Northrup Millivolt Potentiometer 1618888 Test Equipment CS
$24.99
quality
Vintage Leeds  Northrup Speed O Max H
Vintage Leeds Northrup Speed O Max H
$249.92
quality
Leeds  Northrup 1091 Decade Mica Capacitor
Leeds Northrup 1091 Decade Mica Capacitor
$59.99
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
$79.99
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
Antique Leeds  Northrup 200607 25 60 Cycles  Solid Oak Box
Antique Leeds Northrup 200607 25 60 Cycles Solid Oak Box
$175.00
quality
Leeds  Northrup 660912 Speedomax H Chart Paper
Leeds Northrup 660912 Speedomax H Chart Paper
$13.95
quality
Leeds Northrup Temperature Controller Model 2402 Primary Output 4 20mA
Leeds Northrup Temperature Controller Model 2402 Primary Output 4 20mA
$75.00
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
LEEDS NORTHRUP 448 112 5 51 A500 CENTRY 24V DC CONTROLLER D537380
LEEDS NORTHRUP 448 112 5 51 A500 CENTRY 24V DC CONTROLLER D537380
$104.60
quality
Leeds  Northrup LN Speedomax G H W 6430 6460 Series 80 60 Directions 1128
Leeds Northrup LN Speedomax G H W 6430 6460 Series 80 60 Directions 1128
$25.00
quality
Leeds Northrup 4385 Shunt Box Line Potentiometer
Leeds Northrup 4385 Shunt Box Line Potentiometer
$49.99
quality
Leeds  Northrup 8686 Millivolt Potentiometer MV Galvanometer
Leeds Northrup 8686 Millivolt Potentiometer MV Galvanometer
$49.99
quality
LEEDS  NORTHRUP LN MULTIPLE RANGE POTENTIOMETER INDICATOR
LEEDS NORTHRUP LN MULTIPLE RANGE POTENTIOMETER INDICATOR
$115.00
quality
LEEDS  NORTHRUP SINGLE RANGE POTENTIOMETER INDICATOR IN WOODEN CASE
LEEDS NORTHRUP SINGLE RANGE POTENTIOMETER INDICATOR IN WOODEN CASE
$79.95
quality
LEEDS  NORTHRUP INSTRUMENTS CONDUCTIVITY METER 120VAC FOR PARTS OR REPAIR
LEEDS NORTHRUP INSTRUMENTS CONDUCTIVITY METER 120VAC FOR PARTS OR REPAIR
$20.00
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 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 LN MULTIPLE RANGE POTENTIOMETER INDICATOR
LEEDS NORTHRUP LN MULTIPLE RANGE POTENTIOMETER INDICATOR
$115.00
quality
LEEDS  NORTHRUP OUTPUT BOARD ASSEMBLY 046313 NEW NO BOX
LEEDS NORTHRUP OUTPUT BOARD ASSEMBLY 046313 NEW NO BOX
$245.00
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 LN 8686 Millivolt Potentiometer Directions 177125 Issue 7
Leeds Northrup LN 8686 Millivolt Potentiometer Directions 177125 Issue 7
$19.99
quality
Leeds  Northrup 10 OHM Resistance Standard FE8
Leeds Northrup 10 OHM Resistance Standard FE8
$143.98
quality
Leeds  Northrup LN 7075 1  7075 2 Conductivity  Resistivity Monitors
Leeds Northrup LN 7075 1 7075 2 Conductivity Resistivity Monitors
$19.99
quality
Leeds  Northrup 1 OHM Resistance Standard FE12
Leeds Northrup 1 OHM Resistance Standard FE12
$143.98
quality
LEEDS  NORTHRUP RUN UP BOX 9912
LEEDS NORTHRUP RUN UP BOX 9912
$49.99
quality
Leeds  Northrup 8692 2 8693 2 Temperature Potentiometer Parts List 1972
Leeds Northrup 8692 2 8693 2 Temperature Potentiometer Parts List 1972
$9.99
quality
Leeds  Northrup 8248 8249 Rotary Selector Switches Operating Manual
Leeds Northrup 8248 8249 Rotary Selector Switches Operating Manual
$19.99
quality
Leeds  Northrup 324190 DC Null Detector Kit Directions Manual 177598 Issue 2
Leeds Northrup 324190 DC Null Detector Kit Directions Manual 177598 Issue 2
$19.99
quality
Leeds  Northrup 8693 2 Temperature Potentiometer Directions Manual
Leeds Northrup 8693 2 Temperature Potentiometer Directions Manual
$19.99
quality
Leeds  Northrup Manual 324050 Kit of Parts Solid State Null Detector Booklet
Leeds Northrup Manual 324050 Kit of Parts Solid State Null Detector Booklet
$19.99
quality
LEEDS  NORTHRUP CO No 240375 Milli Volts Test Equipment
LEEDS NORTHRUP CO No 240375 Milli Volts Test Equipment
$9.99
quality
Vintage Leeds  Northrup 2430 D Reflecting Galvanometer Type E Light Beam
Vintage Leeds Northrup 2430 D Reflecting Galvanometer Type E Light Beam
$175.00
quality
Vintage Leeds  Northrup Co 521235 Potentiometer Tester Lab Movie Prop etc
Vintage Leeds Northrup Co 521235 Potentiometer Tester Lab Movie Prop etc
$99.99
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
$55.51
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 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
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
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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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