Leeds Northrup

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LEEDSNORTHRUP INSTRUMENTS 2610 100 11 0 01 809 TRANSMITTER
LEEDSNORTHRUP INSTRUMENTS 2610 100 11 0 01 809 TRANSMITTER
$325.00
quality
LEEDS  NORTHRUP VOLTAGE REGULATOR POWER SUPPLY 099012 10 MA DC 3VA
LEEDS NORTHRUP VOLTAGE REGULATOR POWER SUPPLY 099012 10 MA DC 3VA
$14.00
quality
L  N Leeds  Northrup 8690 2 Millivolt Potentiometer
L N Leeds Northrup 8690 2 Millivolt Potentiometer
$119.99
quality
Leeds  Northrup 074437 PC Board
Leeds Northrup 074437 PC Board
$750.00
quality
Leeds  Northrup 078555 PC Board
Leeds Northrup 078555 PC Board
$750.00
quality
Leeds  Northrup 074409 PC Board
Leeds Northrup 074409 PC Board
$175.00
quality
Leeds and Northrup Circle Chart Paper 620001
Leeds and Northrup Circle Chart Paper 620001
$15.00
quality
Leeds  Northrup 074471 Output Module
Leeds Northrup 074471 Output Module
$550.00
quality
LEEDS NORTHRUP 046375 REV C PCB CIRCUIT BOARD B470941
LEEDS NORTHRUP 046375 REV C PCB CIRCUIT BOARD B470941
$90.00
quality
LEEDS NORTHRUP 063918 PROCESSOR REV E1 E2 PCB CIRCUIT BOARD B470943
LEEDS NORTHRUP 063918 PROCESSOR REV E1 E2 PCB CIRCUIT BOARD B470943
$335.00
quality
LEEDS  NORTHRUP AC DC DECADE RESISTOR 4754
LEEDS NORTHRUP AC DC DECADE RESISTOR 4754
$72.99
quality
LEEDS  NORTHRUP RED TYPE K 68 K68 CHART RECORDER
LEEDS NORTHRUP RED TYPE K 68 K68 CHART RECORDER
$93.00
quality
3 NEW LEEDS NORTHRUP 82 80 1004 03 GREEN MARKER 8280100403
3 NEW LEEDS NORTHRUP 82 80 1004 03 GREEN MARKER 8280100403
$30.00
quality
Leeds  Northrup 2610 104 11 0 01 000 Flow Pressure Sensor Transmitter ELE3551
Leeds Northrup 2610 104 11 0 01 000 Flow Pressure Sensor Transmitter ELE3551
$350.00
quality
Leeds  Northrup 2610 104 11 0 01 000 Flow Pressure Sensor Transmitter ELE3552
Leeds Northrup 2610 104 11 0 01 000 Flow Pressure Sensor Transmitter ELE3552
$350.00
quality
Leeds  Northrup Flow Pressure Sensor Transmitter ELE3553
Leeds Northrup Flow Pressure Sensor Transmitter ELE3553
$425.00
quality
LEEDS  NORTHRUP 923 NUMATRON DIGITAL INDICATOR AS ISFOR PARTS
LEEDS NORTHRUP 923 NUMATRON DIGITAL INDICATOR AS ISFOR PARTS
$40.00
quality
Leeds  Northrup 1 OHM Resistance Standard FE11
Leeds Northrup 1 OHM Resistance Standard FE11
$159.98
quality
LEEDS NORTHRUP 046448 PC CAPACITOR ASSEMBLY REV C3 C5 PCB CIRCUIT BOARD B471091
LEEDS NORTHRUP 046448 PC CAPACITOR ASSEMBLY REV C3 C5 PCB CIRCUIT BOARD B471091
$190.00
quality
LEEDS NORTHRUP A1A1A3A2 445848 PROGRAM PANEL RECORDER REV D PCB BOARD B471077
LEEDS NORTHRUP A1A1A3A2 445848 PROGRAM PANEL RECORDER REV D PCB BOARD B471077
$50.00
quality
Leeds  Northrup 1000 OHM Resistance Standard FE15
Leeds Northrup 1000 OHM Resistance Standard FE15
$179.98
quality
Leeds  Northrup 10 OHM Resistance Standard FE8
Leeds Northrup 10 OHM Resistance Standard FE8
$179.98
quality
 Leeds  Northrup 100000 Ohm Voltage Divider cat no 4395
Leeds Northrup 100000 Ohm Voltage Divider cat no 4395
$75.00
quality
Leeds  Northrup 1 OHM Resistance Standard FE12
Leeds Northrup 1 OHM Resistance Standard FE12
$159.98
quality
Leeds  Northrup Speedomax Chart Recorder Used
Leeds Northrup Speedomax Chart Recorder Used
$35.00
quality
SLS1C23 LEEDS Northrup Instruments Dissovled Oxygen PPB 825SY
SLS1C23 LEEDS Northrup Instruments Dissovled Oxygen PPB 825SY
$350.00
quality
SLS1C23 LEEDS Northrup Instruments PPB Sodium 056434 7082 34  826SY
SLS1C23 LEEDS Northrup Instruments PPB Sodium 056434 7082 34 826SY
$300.00
quality
LEEDS AND NORTHRUP STRIP CHART RECORDER LR69323 90 132 180 264 VAC
LEEDS AND NORTHRUP STRIP CHART RECORDER LR69323 90 132 180 264 VAC
$75.00
quality
Leeds  Northrup Manual 2100 Lamp  Scale Reading Device Directions Manual
Leeds Northrup Manual 2100 Lamp Scale Reading Device Directions Manual
$16.00
quality
Leeds and Northrup Electromax 6012 3 04 1 0 00 00 100
Leeds and Northrup Electromax 6012 3 04 1 0 00 00 100
$325.00
quality
Leeds  Northrup Manual 2430 D C Galvanometer Directions Manual
Leeds Northrup Manual 2430 D C Galvanometer Directions Manual
$16.00
quality
Leeds  Northrup Co Optical Pyrometer 8631 F
Leeds Northrup Co Optical Pyrometer 8631 F
$150.00
quality
Leeds  Northrup Manual 2430 D C Galvanometer Directions Manual
Leeds Northrup Manual 2430 D C Galvanometer Directions Manual
$16.00
quality
Leeds  Northrup Manual 2436 Series Galvanometers Directions Manual Issue 3
Leeds Northrup Manual 2436 Series Galvanometers Directions Manual Issue 3
$16.00
quality
Leeds  Northrup Manual 2436 Series Galvanometers Directions Manual Issue 2
Leeds Northrup Manual 2436 Series Galvanometers Directions Manual Issue 2
$16.00
quality
Leeds  Northrup Manual 4285 Kelvin Bridge Ohmmeter Operating Directions Card
Leeds Northrup Manual 4285 Kelvin Bridge Ohmmeter Operating Directions Card
$12.00
quality
Leeds  Northrup 100000 Resistor
Leeds Northrup 100000 Resistor
$144.95
quality
LEEDS  NORTHRUP 5305 Test Set Resistance Measurements Galvanometer Variable LN
LEEDS NORTHRUP 5305 Test Set Resistance Measurements Galvanometer Variable LN
$94.00
quality
Vintage LEEDS amp NORTHRUP 4725 OPEN DIAL WHEATSTONE BRIDGE
Vintage LEEDS amp NORTHRUP 4725 OPEN DIAL WHEATSTONE BRIDGE
$35.85
quality
Vintage Leeds and Northrup Millivolt Galvanometer
Vintage Leeds and Northrup Millivolt Galvanometer
$99.95
quality
LEEDS  NORTHRUP MEREDIAN pH ELECTRODE 117486 NEW IN BOX
LEEDS NORTHRUP MEREDIAN pH ELECTRODE 117486 NEW IN BOX
$35.00
quality
LEEDS  NORTHRUP 4249 MEGOHOM MICROMHO RESISTANCE STANDARD
LEEDS NORTHRUP 4249 MEGOHOM MICROMHO RESISTANCE STANDARD
$250.00
quality
Leeds  Northrup Co Attenuator Cat 7593
Leeds Northrup Co Attenuator Cat 7593
$25.00
quality
Leeds and Northrup Instruments 056098 Working Free Shipping
Leeds and Northrup Instruments 056098 Working Free Shipping
$39.99
quality
Leeds  Northrup Electromax III Auto Tune Controller
Leeds Northrup Electromax III Auto Tune Controller
$299.00
quality
LEEDS  NORTHRUP 074435 USPP 074435
LEEDS NORTHRUP 074435 USPP 074435
$318.15
quality
LEEDS NORTHRUP A1A1A1X MOTHER CARD MODULE PCB CIRCUIT BOARD B309727
LEEDS NORTHRUP A1A1A1X MOTHER CARD MODULE PCB CIRCUIT BOARD B309727
$64.53
quality
NEW LEEDS NORTHRUP 445846 PCB CIRCUIT BOARD B471342
NEW LEEDS NORTHRUP 445846 PCB CIRCUIT BOARD B471342
$150.00
quality
NEW LEEDS  NORTHRUP 078691 REV D
NEW LEEDS NORTHRUP 078691 REV D
$599.00
quality
Leeds  Northrup Manual 4395 Precision Voltage Divider Directions Manual
Leeds Northrup Manual 4395 Precision Voltage Divider Directions Manual
$16.00
quality
Leeds  Northrup Manual 4395 Precision Voltage Divider Directions Man Issue 4
Leeds Northrup Manual 4395 Precision Voltage Divider Directions Man Issue 4
$16.00
quality
Leeds  Northrup Manual 4395 Precision Voltage Divider Directions Man Issue 2
Leeds Northrup Manual 4395 Precision Voltage Divider Directions Man Issue 2
$16.00
quality
Leeds  Northrup Manual 4395 Precision Voltage Divider Parts List 1965
Leeds Northrup Manual 4395 Precision Voltage Divider Parts List 1965
$12.00
quality
NEW LEEDS NORTHRUP 445860E A1A2A1X INPUT REV E PCB CIRCUIT BOARD B471526
NEW LEEDS NORTHRUP 445860E A1A2A1X INPUT REV E PCB CIRCUIT BOARD B471526
$250.00
quality
LEEDS  NORTHRUP HISTORIC LAB VOLTAGE STANDARD
LEEDS NORTHRUP HISTORIC LAB VOLTAGE STANDARD
$400.00
quality
Leeds Northrup Chart Recorder Plotter
Leeds Northrup Chart Recorder Plotter
$49.99
quality
LEEDS NORTHRUP 055867
LEEDS NORTHRUP 055867
$400.00
quality
LEEDS  NORTHRUP 2402 TEMPERATURE CONTROL NEW GENERAL SIGNAL   id6015 6 0
LEEDS NORTHRUP 2402 TEMPERATURE CONTROL NEW GENERAL SIGNAL id6015 6 0
$22.50
quality
Leeds  Northrup Temperature Control Output 441 1 20 31 51 A723 Unused
Leeds Northrup Temperature Control Output 441 1 20 31 51 A723 Unused
$500.00
quality
LEEDS  NORTHRUP SPEEDOMAX MINIATURE RECORDER CHART PAPER 537234 4 1 4 L
LEEDS NORTHRUP SPEEDOMAX MINIATURE RECORDER CHART PAPER 537234 4 1 4 L
$9.00
quality
NEW LEEDS NORTHRUP RED MARKER SET 82 27 0012 05
NEW LEEDS NORTHRUP RED MARKER SET 82 27 0012 05
$50.00
quality
NEW LEEDS NORTHRUP RED MARKER SET 054190
NEW LEEDS NORTHRUP RED MARKER SET 054190
$1.00
quality
Leeds  Northrup Ultrasonic Doppler Flowmeter 475 1 120 120V 25MA 4 20mA Used
Leeds Northrup Ultrasonic Doppler Flowmeter 475 1 120 120V 25MA 4 20mA Used
$74.65
quality
New Leeds  Northrup 018374 Alarm Assembly
New Leeds Northrup 018374 Alarm Assembly
$90.00
quality
Leeds  Northrup 117481 Electrode PH Measuring Gel Filled Diffusion Type
Leeds Northrup 117481 Electrode PH Measuring Gel Filled Diffusion Type
$165.00
quality
Leeds  Northrup 12 Multi Purpose Recorder Speedomax 210 2 Channel
Leeds Northrup 12 Multi Purpose Recorder Speedomax 210 2 Channel
$99.00
quality
Vintage Leeds  Northrup Stromberg Carlson 42 51165 Potentiometer Body Parts
Vintage Leeds Northrup Stromberg Carlson 42 51165 Potentiometer Body Parts
$289.99
quality
Leeds  Northrup 2610 100 12 2 01 300 802 809 Pressure Transmitter New Old Stk
Leeds Northrup 2610 100 12 2 01 300 802 809 Pressure Transmitter New Old Stk
$799.99
quality
LEEDS  NORTHRUP POWER SUPPLY 099012  FOR PARTS REPAIR
LEEDS NORTHRUP POWER SUPPLY 099012 FOR PARTS REPAIR
$25.00
quality
5VINTAGE LEEDS  NORTHRUP STANDARD CELL
5VINTAGE LEEDS NORTHRUP STANDARD CELL
$50.00
quality
VINTAGE 50s Leeds  Northrup Co Potentiometer NUCLEAR ERA
VINTAGE 50s Leeds Northrup Co Potentiometer NUCLEAR ERA
$300.00
quality
Vintage Leeds  Northrup 5430 A Test Set Galvanometer In Wooden Case
Vintage Leeds Northrup 5430 A Test Set Galvanometer In Wooden Case
$40.00
quality
LEEDS  NORTHRUP THERMOCOUPLE CAT 8867 VINTAGE 1123
LEEDS NORTHRUP THERMOCOUPLE CAT 8867 VINTAGE 1123
$150.00
quality
LEEDS NORTHRUP 445856 A1A1A2X 196456 B1 PCB CIRCUIT BOARD B406593
LEEDS NORTHRUP 445856 A1A1A2X 196456 B1 PCB CIRCUIT BOARD B406593
$24.53
quality
LEEDS NORTHRUP 018484 575015K 0 800F C PCB CIRCUIT BOARD B406600
LEEDS NORTHRUP 018484 575015K 0 800F C PCB CIRCUIT BOARD B406600
$17.53
quality
Leeds  Northrup check coil 115043
Leeds Northrup check coil 115043
$9.99
quality
LEEDS NORTHRUP 018484 575468T 0 40C L PCB CIRCUIT BOARD B406639
LEEDS NORTHRUP 018484 575468T 0 40C L PCB CIRCUIT BOARD B406639
$17.53
quality
Leeds  Northrup Kelvin Bridge Ohmmeter Wood Case 16x8 l Dials Bakelite Original
Leeds Northrup Kelvin Bridge Ohmmeter Wood Case 16x8 l Dials Bakelite Original
$99.00
quality
Leeds  Northrup Manual Directions On Card For Operating LN  5305 Test Set
Leeds Northrup Manual Directions On Card For Operating LN 5305 Test Set
$12.00
quality
Leeds  Northrup Manual Directions For Operating LN  5430 AM 1 Test Set
Leeds Northrup Manual Directions For Operating LN 5430 AM 1 Test Set
$8.00
quality
NEW LEEDS NORTHRUP 074621 REV C PCB CIRCUIT BOARD D481861
NEW LEEDS NORTHRUP 074621 REV C PCB CIRCUIT BOARD D481861
$180.00
quality
Leeds  Northrup Manual 7410 EO Specific Ion  pH meter Directions Manual w Sch
Leeds Northrup Manual 7410 EO Specific Ion pH meter Directions Manual w Sch
$24.00
quality
Leeds  Northrup Manual 7552 Potentiometer Operating Directions Manual w Diagram
Leeds Northrup Manual 7552 Potentiometer Operating Directions Manual w Diagram
$20.00
quality
Leeds  Northrup Manual 7553 5  7553 6 Type K3 Procedure for Certification
Leeds Northrup Manual 7553 5 7553 6 Type K3 Procedure for Certification
$16.00
quality
Leeds  Northrup Manual 7592 D C Volt Box Directions Manual w Schematic Issue 3
Leeds Northrup Manual 7592 D C Volt Box Directions Manual w Schematic Issue 3
$20.00
quality
LN LEEDS  NORTHRUP ALARM CIRCUIT BOARD CARD 06 980 3004
LN LEEDS NORTHRUP ALARM CIRCUIT BOARD CARD 06 980 3004
$40.00
quality
Leeds  Northrup Manual 7582 7592 7593 D C Volt Boxes Directions Manual w Sch
Leeds Northrup Manual 7582 7592 7593 D C Volt Boxes Directions Manual w Sch
$20.00
quality
Leeds  Northrup Manual 8657 C Potentiometer Indicator Directions Manual
Leeds Northrup Manual 8657 C Potentiometer Indicator Directions Manual
$20.00
quality
Leeds  Northrup Manual 8657 C Potentiometer Indicator Directions Man Damaged
Leeds Northrup Manual 8657 C Potentiometer Indicator Directions Man Damaged
$8.00
quality
Leeds  Northrup Manual 099034 Constant Voltage Supply Directions Manual
Leeds Northrup Manual 099034 Constant Voltage Supply Directions Manual
$12.00
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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