Leeds Northrup

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NEW Leeds  Northrup Chart Paper PN 31039046 Model 677003 1P31039046 Fan Fold
NEW Leeds Northrup Chart Paper PN 31039046 Model 677003 1P31039046 Fan Fold
$19.95
quality
VINTAGE LEEDS NORTHRUP WIRE CRIMPERS FREE SHIPPING
VINTAGE LEEDS NORTHRUP WIRE CRIMPERS FREE SHIPPING
$24.99
quality
NEW LEEDS NORTHRUP 4801 01 03 11 088 208 CONDUCTIVITY CELL SENSOR B468469
NEW LEEDS NORTHRUP 4801 01 03 11 088 208 CONDUCTIVITY CELL SENSOR B468469
$325.00
quality
LEEDS NORTHRUP 4905 1 44 088 7 206 CONDUCTIVITY CELL SENSOR B468450
LEEDS NORTHRUP 4905 1 44 088 7 206 CONDUCTIVITY CELL SENSOR B468450
$175.00
quality
LEEDS NORTHRUP 4905 1 44 088 7 CONDUCTIVITY CELL SENSOR B468451
LEEDS NORTHRUP 4905 1 44 088 7 CONDUCTIVITY CELL SENSOR B468451
$175.00
quality
LEEDS NORTHRUP 4801 01 03 11 088 208 CONDUCTIVITY CELL SENSOR B468466
LEEDS NORTHRUP 4801 01 03 11 088 208 CONDUCTIVITY CELL SENSOR B468466
$250.00
quality
Leeds  Northrup 7082 12 PH Analyzer w Auxilary relay card 9430 004 056422
Leeds Northrup 7082 12 PH Analyzer w Auxilary relay card 9430 004 056422
$209.00
quality
Leeds  Northrup LN Lab Standard Resistor 20000 Ohms Cat 4045 B 100K
Leeds Northrup LN Lab Standard Resistor 20000 Ohms Cat 4045 B 100K
$95.78
quality
Leeds  Northrup 177232 issue 5 Directions for Speedomax W
Leeds Northrup 177232 issue 5 Directions for Speedomax W
$20.00
quality
Leeds  Northrup 177161 Direction Book for 124195 124196 124197 124198 124221
Leeds Northrup 177161 Direction Book for 124195 124196 124197 124198 124221
$20.00
quality
Leeds  Northrup 177149 Directions for 124177
Leeds Northrup 177149 Directions for 124177
$20.00
quality
Leeds  Northrup 177232 issue 6 Directions for Speedomax W
Leeds Northrup 177232 issue 6 Directions for Speedomax W
$20.00
quality
Leeds  Northrup 177529 issue 2 for Series 80
Leeds Northrup 177529 issue 2 for Series 80
$20.00
quality
Leeds  Northrup 177131 Directions for 8692
Leeds Northrup 177131 Directions for 8692
$20.00
quality
Leeds  Northrup 177132 Directions for 8693
Leeds Northrup 177132 Directions for 8693
$20.00
quality
Leeds  Northrup 077992 issue 8 Directions for Series 60
Leeds Northrup 077992 issue 8 Directions for Series 60
$20.00
quality
Leeds  Northrup 100 262 Speedomax H Manual for 077990
Leeds Northrup 100 262 Speedomax H Manual for 077990
$20.00
quality
Leeds  Northrup 177304 issue 7 Addendum to directions for Speedomax H  W
Leeds Northrup 177304 issue 7 Addendum to directions for Speedomax H W
$20.00
quality
Leeds  Northrup 177304 issue 7 Directions for Speedomax H  W
Leeds Northrup 177304 issue 7 Directions for Speedomax H W
$20.00
quality
Leeds  Northrup 100 470gssk Speedomax H Directions for 077990
Leeds Northrup 100 470gssk Speedomax H Directions for 077990
$20.00
quality
Leeds  Northrup 177530 Directions for series 80
Leeds Northrup 177530 Directions for series 80
$20.00
quality
Leeds  Northrup 177567 Directions for 8693 2
Leeds Northrup 177567 Directions for 8693 2
$20.00
quality
Leeds  Northrup 179001 issue 4 year 1958 Parts Catalog for speedomax H
Leeds Northrup 179001 issue 4 year 1958 Parts Catalog for speedomax H
$20.00
quality
Leeds  Northrup 179001 year 1972 Parts Catalog for Speedomax H
Leeds Northrup 179001 year 1972 Parts Catalog for Speedomax H
$20.00
quality
Leeds Northrup 177304 Directions for Speedomax H  W
Leeds Northrup 177304 Directions for Speedomax H W
$20.00
quality
Leeds  Northrup 41149 Directions for 8657 C
Leeds Northrup 41149 Directions for 8657 C
$20.00
quality
Leeds  Northrup 8 876 Speedomax W parts catalog for 179018
Leeds Northrup 8 876 Speedomax W parts catalog for 179018
$20.00
quality
Leeds  Northrup 3 350 Moving Coil Galvanometers Notes
Leeds Northrup 3 350 Moving Coil Galvanometers Notes
$20.00
quality
Leeds  Northrup 277723 Operators Manual for SpeedoMax 1650  2500RTD
Leeds Northrup 277723 Operators Manual for SpeedoMax 1650 2500RTD
$20.00
quality
Leeds Northrup 177179 Directions for 10118 101118
Leeds Northrup 177179 Directions for 10118 101118
$20.00
quality
Leeds Northrup 77 10 5 1 Directions for S 60000
Leeds Northrup 77 10 5 1 Directions for S 60000
$20.00
quality
Leeds  Northrup 179018 year 1970 Parts Catalog for Parts Catalog Speedomax
Leeds Northrup 179018 year 1970 Parts Catalog for Parts Catalog Speedomax
$20.00
quality
Leeds  Northrup 277733 Operators Manual for 2400 2402
Leeds Northrup 277733 Operators Manual for 2400 2402
$20.00
quality
Leeds  Northrup P ND4B Parts catalog for Series 49
Leeds Northrup P ND4B Parts catalog for Series 49
$20.00
quality
Leeds  Northrup 77 29 0 02 Directions for 8662
Leeds Northrup 77 29 0 02 Directions for 8662
$20.00
quality
Leeds  Northrup 179018 year 1972 Parts Catalog for Parts Catalog Speedomax
Leeds Northrup 179018 year 1972 Parts Catalog for Parts Catalog Speedomax
$20.00
quality
Leeds  Northrup 80 867 Speedomax W L parts catalog for 179024
Leeds Northrup 80 867 Speedomax W L parts catalog for 179024
$20.00
quality
Leeds  Northrup 70 677gscb Speddomax HW Directions for 177304
Leeds Northrup 70 677gscb Speddomax HW Directions for 177304
$20.00
quality
Leeds  Northrup 40 568gssk Speedomax W L Directions for 177400
Leeds Northrup 40 568gssk Speedomax W L Directions for 177400
$20.00
quality
Leeds  Northrup 77 6 4 6 Directions for 2430
Leeds Northrup 77 6 4 6 Directions for 2430
$20.00
quality
Leeds Northrup 177186 Directions for SpeedoMax Model S
Leeds Northrup 177186 Directions for SpeedoMax Model S
$20.00
quality
Leeds Northrup 77990 Directions for Speedomax H Manual
Leeds Northrup 77990 Directions for Speedomax H Manual
$20.00
quality
Leeds  Northrup P ND443 Micromax Parts for Model C 20000 Series
Leeds Northrup P ND443 Micromax Parts for Model C 20000 Series
$20.00
quality
Leeds  Northrup 179018 Parts catalog for speedomax w
Leeds Northrup 179018 Parts catalog for speedomax w
$20.00
quality
Leeds Northrup 179006 Parts Catalog for Speedomax S 60000
Leeds Northrup 179006 Parts Catalog for Speedomax S 60000
$20.00
quality
Leeds  Northrup 8 1770gsmh Instruction Manual for 177596
Leeds Northrup 8 1770gsmh Instruction Manual for 177596
$20.00
quality
Leeds  Northrup 40 1174gs Speedomax H W conversion directions for 177675
Leeds Northrup 40 1174gs Speedomax H W conversion directions for 177675
$20.00
quality
Leeds  Northrup 6 473gshc Speedomax 600 Series XL Directions for 177596
Leeds Northrup 6 473gshc Speedomax 600 Series XL Directions for 177596
$20.00
quality
Leeds Northrup P ND461 Parts list for Speedomax S 60000
Leeds Northrup P ND461 Parts list for Speedomax S 60000
$20.00
quality
Leeds  Northrup 50 164 Speedomax W manual for 177232
Leeds Northrup 50 164 Speedomax W manual for 177232
$20.00
quality
Leeds  Northrup 77 9 1 2 Direction Book for 10224 10225 10235 10236 10254 1025
Leeds Northrup 77 9 1 2 Direction Book for 10224 10225 10235 10236 10254 1025
$20.00
quality
Leeds  Northrup 70 677gsbc Speedomax HW Directions for 177304
Leeds Northrup 70 677gsbc Speedomax HW Directions for 177304
$20.00
quality
Vintage Leeds  Northrup Co Potentiometer Cat No 8694
Vintage Leeds Northrup Co Potentiometer Cat No 8694
$50.25
quality
Leeds  Northrup LN model LT 3548 20 Ohm Lab Standard Resistor certified
Leeds Northrup LN model LT 3548 20 Ohm Lab Standard Resistor certified
$895.00
quality
Leeds  Northrup LN model LT 4261 145454 Ohm Lab Standard Resistor
Leeds Northrup LN model LT 4261 145454 Ohm Lab Standard Resistor
$595.00
quality
NEW Leeds  Northrup Circuit Board 165 Recorder 055872 NEW
NEW Leeds Northrup Circuit Board 165 Recorder 055872 NEW
$19.99
quality
LEEDS  NORTHRUP DIFFERENTIAL PRESSURE TRANSMITTER
LEEDS NORTHRUP DIFFERENTIAL PRESSURE TRANSMITTER
$199.99
quality
Leeds  Northrup 177641 Directions for solid state null detector galvanometer
Leeds Northrup 177641 Directions for solid state null detector galvanometer
$20.00
quality
LEEDS  NORTHRUP DECADE RESISTOR CALIBRATOR BOX 0 1000 OHMS MODEL 4776
LEEDS NORTHRUP DECADE RESISTOR CALIBRATOR BOX 0 1000 OHMS MODEL 4776
$39.99
quality
LN Leeds  Northrup 4210 Thomas one ohm NISTcertified
LN Leeds Northrup 4210 Thomas one ohm NISTcertified
$1,495.00
quality
Vintage Leeds  Northrup Temperature Potentiometer model 8693 Untested
Vintage Leeds Northrup Temperature Potentiometer model 8693 Untested
$9.99
quality
Antique Leeds  Northrup Kelvin Bridge Ohmmeter Wood Case
Antique Leeds Northrup Kelvin Bridge Ohmmeter Wood Case
$20.00
quality
LEEDS NORTHRUP 7082 16 120 240V AC 15VA CONDUCTIVITY ANALYZER B469046
LEEDS NORTHRUP 7082 16 120 240V AC 15VA CONDUCTIVITY ANALYZER B469046
$200.00
quality
LEEDS  NORTHRUP LIMIT CONTROLLER M2077 M2077 L02 T1724 H10 NEW IN BOX
LEEDS NORTHRUP LIMIT CONTROLLER M2077 M2077 L02 T1724 H10 NEW IN BOX
$299.95
quality
NEW Leeds  Northrup 074409 Analog Output Card Rev C
NEW Leeds Northrup 074409 Analog Output Card Rev C
$99.99
quality
NEW Leeds  Northrup 074427 PC Board 5 Slot W O Power Input Option
NEW Leeds Northrup 074427 PC Board 5 Slot W O Power Input Option
$399.99
quality
Refurbished Leeds  Northrup 074417 PC Control Board Rev CR16 Tested
Refurbished Leeds Northrup 074417 PC Control Board Rev CR16 Tested
$499.99
quality
New Leeds  Northrup 074441 Converter Board Rev A2 Control Board
New Leeds Northrup 074441 Converter Board Rev A2 Control Board
$349.99
quality
Leeds Northrup PCB Circuit Board 055872
Leeds Northrup PCB Circuit Board 055872
$233.99
quality
Lot 2 Leeds  Northrup 4973 001 333 20 000 Conductivity Cell F18 JM
Lot 2 Leeds Northrup 4973 001 333 20 000 Conductivity Cell F18 JM
$15.00
quality
Vintage LEEDS  NORTHRUP Multiple Range Potentiometer Indicator  Directions LN
Vintage LEEDS NORTHRUP Multiple Range Potentiometer Indicator Directions LN
$58.50
quality
NEW LEEDS NORTHRUP 063316 C 5189 T 9443 DISSOLVED OXYGEN PROBE SENSOR B468922
NEW LEEDS NORTHRUP 063316 C 5189 T 9443 DISSOLVED OXYGEN PROBE SENSOR B468922
$600.00
quality
LEEDS  NORTHRUP ELECTROMAX TEMPERATURE CONTROLLER
LEEDS NORTHRUP ELECTROMAX TEMPERATURE CONTROLLER
$399.99
quality
LEEDS  NORTHRUP 055645 USPP 055645
LEEDS NORTHRUP 055645 USPP 055645
$22.68
quality
New Leeds  Northrup 074405 PC Board W Power Input Options
New Leeds Northrup 074405 PC Board W Power Input Options
$349.99
quality
Leeds Northrup galvonometer
Leeds Northrup galvonometer
$34.99
quality
New Leeds  Northrup 074421 Memory Card Rev C
New Leeds Northrup 074421 Memory Card Rev C
$99.99
quality
Honeywell Leeds Northrup 074419 Control Board LN Rev C
Honeywell Leeds Northrup 074419 Control Board LN Rev C
$375.00
quality
Leeds Northrup Dissolved Oxygen Meter 20 ppm 20 ppb
Leeds Northrup Dissolved Oxygen Meter 20 ppm 20 ppb
$140.00
quality
LEEDS  NORTHRUP LN 620006 SPEEDOMAX H ROUND CHART PAPER UNIVERSAL PLAIN SCALE
LEEDS NORTHRUP LN 620006 SPEEDOMAX H ROUND CHART PAPER UNIVERSAL PLAIN SCALE
$23.99
quality
LEEDS  NORTHRUP LN 620153 SPEEDOMAX H ROUND CHART PAPER DECIBEL SCALE
LEEDS NORTHRUP LN 620153 SPEEDOMAX H ROUND CHART PAPER DECIBEL SCALE
$24.99
quality
Leeds  Northrup 4040B
Leeds Northrup 4040B
$395.00
quality
Leeds  Northrup 4045B
Leeds Northrup 4045B
$395.00
quality
Leeds  Northrup 4025B 10ohm
Leeds Northrup 4025B 10ohm
$250.00
quality
LEEDS NORTHRUP SPEEDOMAX CHART RECORDER
LEEDS NORTHRUP SPEEDOMAX CHART RECORDER
$149.99
quality
LEEDS  NORTHRUP AC DC DECADE RESISTOR 4755
LEEDS NORTHRUP AC DC DECADE RESISTOR 4755
$125.00
quality
Leeds  Northrup Co Potentiometer 1970s from Westinghouse RD
Leeds Northrup Co Potentiometer 1970s from Westinghouse RD
$24.95
quality
VINTAGE LEEDS  NORTHRUP SELF INDUCTANCE Tester Milli Henrys
VINTAGE LEEDS NORTHRUP SELF INDUCTANCE Tester Milli Henrys
$40.00
quality
Vintage Leeds Northrup potentiometer model 782646 wooden box tester free ship
Vintage Leeds Northrup potentiometer model 782646 wooden box tester free ship
$64.99
quality
Leeds Northrup Reflecting Mirror Galvanometer Gray model 2430 C tester free ship
Leeds Northrup Reflecting Mirror Galvanometer Gray model 2430 C tester free ship
$69.99
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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