Leeds Northrup

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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
$188.28
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
$19.20
quality
Leeds  Northrup Speedomax W Parts Catalog 179018
Leeds Northrup Speedomax W Parts Catalog 179018
$23.20
quality
Leeds  Northrup Speedomax W with Series 80 Controller Operating Manual
Leeds Northrup Speedomax W with Series 80 Controller Operating Manual
$23.20
quality
Leeds  Northrup Speedomax W with Series 60 Controller Operating Manual
Leeds Northrup Speedomax W with Series 60 Controller Operating Manual
$23.20
quality
LEEDS  NORTHRUP SINGLE RANGE POTENTIOMETER INDICATOR IN WOODEN CASE
LEEDS NORTHRUP SINGLE RANGE POTENTIOMETER INDICATOR IN WOODEN CASE
$79.95
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 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
Vintage Leeds  Northrup 8686 Millivolt Potentiometer with manuals
Vintage Leeds Northrup 8686 Millivolt Potentiometer with manuals
$40.00
quality
Vtg 1920 Leeds  Northrup Co Catalog Hump Method Heat Treatment of Steel Book PA
Vtg 1920 Leeds Northrup Co Catalog Hump Method Heat Treatment of Steel Book PA
$9.99
quality
Leeds  Northrup 1930s Model 5430 A Electrical Test Set in Wood Box WORKING
Leeds Northrup 1930s Model 5430 A Electrical Test Set in Wood Box WORKING
$79.99
quality
LEEDS  NORTHRUP OUTPUT BOARD ASSEMBLY 046313 NEW OUT OF BOX
LEEDS NORTHRUP OUTPUT BOARD ASSEMBLY 046313 NEW OUT OF BOX
$245.00
quality
LEEDS  NORTHRUP RUN UP BOX 9912
LEEDS NORTHRUP RUN UP BOX 9912
$49.99
quality
LEEDS  NORTHRUP THOMAS TYPE 1 OHM STANDARD 4210 NICE
LEEDS NORTHRUP THOMAS TYPE 1 OHM STANDARD 4210 NICE
$1,250.00
quality
Leeds  Northrup Cal Lab Resistor 100000 Ohm
Leeds Northrup Cal Lab Resistor 100000 Ohm
$100.00
quality
Leeds  Northrup Cal Lab Resistor 104025 Ohm
Leeds Northrup Cal Lab Resistor 104025 Ohm
$100.00
quality
Leeds  Northrup Cal Lab Resistor 805 Ohm
Leeds Northrup Cal Lab Resistor 805 Ohm
$100.00
quality
Leeds  Northrup 099246
Leeds Northrup 099246
$225.00
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
LEEDS  NORTHRUP KS 10376 NULL VOLTAGE TEST SET or RESISTANCE BRIDGE USN marked
LEEDS NORTHRUP KS 10376 NULL VOLTAGE TEST SET or RESISTANCE BRIDGE USN marked
$29.99
quality
Test Set Leeds  Northrup No 5305 CTAM 9255
Test Set Leeds Northrup No 5305 CTAM 9255
$65.00
quality
LEEDS NORTHRUP 8690 2 MILLIVOLT POTENTIOMETER D525668
LEEDS NORTHRUP 8690 2 MILLIVOLT POTENTIOMETER D525668
$16.53
quality
NEW Leeds  Northrup 031308 20 Point Resistor FREE SHIPPING
NEW Leeds Northrup 031308 20 Point Resistor FREE SHIPPING
$27.99
quality
LEEDS  NORTHRUP 10000 OHMS ABS RESISTOR
LEEDS NORTHRUP 10000 OHMS ABS RESISTOR
$92.00
quality
LEEDS  NORTHRUP SPEEDOMAX CHART RECORDER
LEEDS NORTHRUP SPEEDOMAX CHART RECORDER
$349.99
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 and Northrup 10000 Ohm Cat No 4040 B Resistors
Leeds and Northrup 10000 Ohm Cat No 4040 B Resistors
$65.31
quality
Leeds  Northrup LN 10760 Series Control Units Parts Catalog
Leeds Northrup LN 10760 Series Control Units Parts Catalog
$6.40
quality
Leeds  Northrup LN Series 38 Pneumatic Control Parts Catalog
Leeds Northrup LN Series 38 Pneumatic Control Parts Catalog
$6.40
quality
Leeds  Northrup LN 4905 Series Conductivity Cells Directions
Leeds Northrup LN 4905 Series Conductivity Cells Directions
$7.20
quality
Leeds  Northrup LN Series 80 3 Action DAT Controller Directions
Leeds Northrup LN Series 80 3 Action DAT Controller Directions
$9.60
quality
Leeds  Northrup LN Speedomax G H W 6430 6460 Series 80 60 Directions  MORE
Leeds Northrup LN Speedomax G H W 6430 6460 Series 80 60 Directions MORE
$28.00
quality
Vintage Leeds  Northrup Cat 4746 Decade Resistor
Vintage Leeds Northrup Cat 4746 Decade Resistor
$25.00
quality
Leeds  Northrup Potentiometer Indicator Double Range Galvanometer Vintage Wood
Leeds Northrup Potentiometer Indicator Double Range Galvanometer Vintage Wood
$79.95
quality
Leeds Northrup Co Millivolt Potentiometer
Leeds Northrup Co Millivolt Potentiometer
$99.99
quality
Leeds  Northrup 4775 Calibrator Tester Quality Vintage Laboratory Equipment
Leeds Northrup 4775 Calibrator Tester Quality Vintage Laboratory Equipment
$99.95
quality
VINTAGE LEEDS  NORTHRUP STUDENTS POTENTIOMETER MN 7645
VINTAGE LEEDS NORTHRUP STUDENTS POTENTIOMETER MN 7645
$74.99
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
LN Leeds  Northrup 8693 2 Temperature Potentiometer w Manual NASA
LN Leeds Northrup 8693 2 Temperature Potentiometer w Manual NASA
$149.00
quality
LEEDS  NORTHRUP MODEL 8686 MILLIVOLT POTENTIOMETER
LEEDS NORTHRUP MODEL 8686 MILLIVOLT POTENTIOMETER
$29.99
quality
Leeds  Northrup Station Auto Manual
Leeds Northrup Station Auto Manual
$189.00
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
$43.13
quality
LEEDS  NORTHRUP RESISTORS 1 OHM A9
LEEDS NORTHRUP RESISTORS 1 OHM A9
$60.00
quality
LEEDS  NORTHRUP RESISTORS 1 OHM C7
LEEDS NORTHRUP RESISTORS 1 OHM C7
$60.00
quality
LEEDS  NORTHRUP RESISTORS 1 OHM E5
LEEDS NORTHRUP RESISTORS 1 OHM E5
$60.00
quality
LEEDS  NORTHRUP RESISTORS 1 OHM D6
LEEDS NORTHRUP RESISTORS 1 OHM D6
$60.00
quality
19 LEEDS  NORTHRUP SPEEDOMAX MINI RECORDER CHART PAPER
19 LEEDS NORTHRUP SPEEDOMAX MINI RECORDER CHART PAPER
$190.00
quality
Vtg Leeds  Northrup Temperature Potentiometer 8692 Electrical Test Equipment
Vtg Leeds Northrup Temperature Potentiometer 8692 Electrical Test Equipment
$41.39
quality
Leeds and Northrup Wheatstone Bridge 5430 AM 1
Leeds and Northrup Wheatstone Bridge 5430 AM 1
$57.85
quality
Leeds  Northrup Manual 4397 M Voltage Divider Resistive Instruction Manual
Leeds Northrup Manual 4397 M Voltage Divider Resistive Instruction Manual
$15.20
quality
Leeds  Northrup Red Type K 68 C Chart Data Recorder Instrument K68
Leeds Northrup Red Type K 68 C Chart Data Recorder Instrument K68
$99.99
quality
Leeds  Northrup 10 OHM Resistance Standard FE8
Leeds Northrup 10 OHM Resistance Standard FE8
$143.98
quality
Leeds  Northrup MICROMAX CHART RECORDER
Leeds Northrup MICROMAX CHART RECORDER
$750.00
quality
vintage leeds northrup MICROFARAD with wood case STEAMPUNK
vintage leeds northrup MICROFARAD with wood case STEAMPUNK
$60.00
quality
Leeds  Northrup Chart Recorder mdl 201 11 000 NN21
Leeds Northrup Chart Recorder mdl 201 11 000 NN21
$143.98
quality
LEEDS  NORTHRUP 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
$165.00
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
LEEDS  NORTHRUP 7553 TYPE K3 UNIVERSAL GUARDED POTENTIOMETER DIRECTIONS
LEEDS NORTHRUP 7553 TYPE K3 UNIVERSAL GUARDED POTENTIOMETER DIRECTIONS
$21.97
quality
LEEDS  NORTHRUP 7553 5 AND 7553 6 TYPE K 3 UNIVERSAL POTENTIOMETERS DIRECTIONS
LEEDS NORTHRUP 7553 5 AND 7553 6 TYPE K 3 UNIVERSAL POTENTIOMETERS DIRECTIONS
$18.97
quality
Leeds  Northrup 01055979 Printer Red Marker 15 pcs
Leeds Northrup 01055979 Printer Red Marker 15 pcs
$60.00
quality
Lowered Price LN Leeds  Northrup 4222 001 Ohm Standard Resistor
Lowered Price LN Leeds Northrup 4222 001 Ohm Standard Resistor
$395.00
quality
Lowered price LN Leeds  Northrup 4222B 001 Ohm Standard Resistor
Lowered price LN Leeds Northrup 4222B 001 Ohm Standard Resistor
$445.00
quality
Vintage Leeds  Northrup 638097 Potentiometer  Galvanometer Test Equipment
Vintage Leeds Northrup 638097 Potentiometer Galvanometer Test Equipment
$79.00
quality
LEEDS  NORTHRUP Resistance Decacde 4776 Resistor Box 160699
LEEDS NORTHRUP Resistance Decacde 4776 Resistor Box 160699
$199.00
quality
Leeds Northrup 10548213 Green Markers Lot of 30
Leeds Northrup 10548213 Green Markers Lot of 30
$25.00
quality
Leeds  Northrup 8064 A 8064 2 A2 8064 3 A3 Thermometer Bridge Manual
Leeds Northrup 8064 A 8064 2 A2 8064 3 A3 Thermometer Bridge Manual
$15.20
quality
Leeds  Northrup 8064 8064 A Resistance Thermometer Bridge Direction Op Manual
Leeds Northrup 8064 8064 A Resistance Thermometer Bridge Direction Op Manual
$15.20
quality
Leeds Northrup 10548189 Blue Markers Lot of 30
Leeds Northrup 10548189 Blue Markers Lot of 30
$25.00
quality
LEEDS NORTHRUP AYRTON SHUNT Cat 2666 Total Resistance 10 000OHMS
LEEDS NORTHRUP AYRTON SHUNT Cat 2666 Total Resistance 10 000OHMS
$32.49
quality
Leeds  Northrup 074825 Cat Manual Station 120 220V 50 60HZ 4A Ref A
Leeds Northrup 074825 Cat Manual Station 120 220V 50 60HZ 4A Ref A
$249.99
quality
Vintage Leeds  Northrup 8686 Millivolt Potentiometer with manual
Vintage Leeds Northrup 8686 Millivolt Potentiometer with manual
$39.50
quality
GENTLY USED LEEDS  NORTHRUP 10 Ohm RESISTANCE STANDARD 1578936 TESTED
GENTLY USED LEEDS NORTHRUP 10 Ohm RESISTANCE STANDARD 1578936 TESTED
$395.00
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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