Leeds Northrup

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LEEDS NORTHRUP 063232 ANALOG MODULE CONTROL FOR 1650 CIRCUIT BOARD B201801
LEEDS NORTHRUP 063232 ANALOG MODULE CONTROL FOR 1650 CIRCUIT BOARD B201801
$340.00
quality
LEEDS  NORTHRUP 117038 GLASS PH ELECTRODE NIB
LEEDS NORTHRUP 117038 GLASS PH ELECTRODE NIB
$39.99
quality
NEW LEEDS  NORTHRUP PRESSURE TRANSMITTER 2610 100 11 2 00 206
NEW LEEDS NORTHRUP PRESSURE TRANSMITTER 2610 100 11 2 00 206
$214.99
quality
LEEDS  NORTHRUP PRESSURE TRANSMITTER MODEL 2610 100 11 2 01 206
LEEDS NORTHRUP PRESSURE TRANSMITTER MODEL 2610 100 11 2 01 206
$149.99
quality
LEEDS NORTHRUP 4931 AB 000 BRASS CONDUCTIVITY CELL SENSOR D458562
LEEDS NORTHRUP 4931 AB 000 BRASS CONDUCTIVITY CELL SENSOR D458562
$250.00
quality
NEW LEEDS  NORTHRUP PRESSURE TRANSMITTER 2630 104 11 0 01 809
NEW LEEDS NORTHRUP PRESSURE TRANSMITTER 2630 104 11 0 01 809
$224.99
quality
Leeds  Northrup 8888 20 30 0 8803 0 11 Linearizer 8888 8888203008803011
Leeds Northrup 8888 20 30 0 8803 0 11 Linearizer 8888 8888203008803011
$185.00
quality
NEW LEEDS NORTHRUP CONTROL ASSEMBLY 352845
NEW LEEDS NORTHRUP CONTROL ASSEMBLY 352845
$55.20
quality
LEEDS NORTHRUP LN MODEL 8690 MILLIVOLT POTENTIOMETER GALVANOMETER
LEEDS NORTHRUP LN MODEL 8690 MILLIVOLT POTENTIOMETER GALVANOMETER
$65.00
quality
LEEDS NORTHRUP SPECIFIC CONDUCTANCE METER TESTER Micromhos cm FREE SHIPPING
LEEDS NORTHRUP SPECIFIC CONDUCTANCE METER TESTER Micromhos cm FREE SHIPPING
$79.99
quality
Leeds  Northrup MICROFARAD Capacitor Bakelite Sangamo Electric Springfield Ill
Leeds Northrup MICROFARAD Capacitor Bakelite Sangamo Electric Springfield Ill
$49.99
quality
Leeds  Northrup 074825 CAT Manual Station 120 220V 4A
Leeds Northrup 074825 CAT Manual Station 120 220V 4A
$49.99
quality
Leeds Northrup Chart Recorder Plotter
Leeds Northrup Chart Recorder Plotter
$80.00
quality
Leeds  Northrup LN 10760 Series Control Units Parts Catalog
Leeds Northrup LN 10760 Series Control Units Parts Catalog
$12.00
quality
Leeds  Northrup LN 10769 10769 G Control Units for Electric Furnace Directions
Leeds Northrup LN 10769 10769 G Control Units for Electric Furnace Directions
$12.00
quality
Leeds  Northrup LN Series 38 Pneumatic Control Parts Catalog
Leeds Northrup LN Series 38 Pneumatic Control Parts Catalog
$12.00
quality
Leeds  Northrup LN 4249 Megohm Micromho Resistance Standard Directions
Leeds Northrup LN 4249 Megohm Micromho Resistance Standard Directions
$12.00
quality
Leeds  Northrup LN 4905 Series Conductivity Cells Directions
Leeds Northrup LN 4905 Series Conductivity Cells Directions
$14.00
quality
Leeds  Northrup LN 6430 6460 Series Electromax III Controllers Directions
Leeds Northrup LN 6430 6460 Series Electromax III Controllers Directions
$24.50
quality
Leeds  Northrup LN 7553 5 7553 6 Type K 3 Universal Potentiometers Directions
Leeds Northrup LN 7553 5 7553 6 Type K 3 Universal Potentiometers Directions
$21.00
quality
Leeds  Northrup LN Series 80 3 Action DAT Controller Directions
Leeds Northrup LN Series 80 3 Action DAT Controller Directions
$17.50
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
$75.00
quality
LEEDS  NORTHRUP ELECTROMAX CONTROLLER 6012 3 03 1 7 00 00 100 W BOOK E6
LEEDS NORTHRUP ELECTROMAX CONTROLLER 6012 3 03 1 7 00 00 100 W BOOK E6
$179.00
quality
LEEDS  NORTHRUP ELECTROMAX CONTROLLER 6012 3 03 1 7 00 00 100 E6
LEEDS NORTHRUP ELECTROMAX CONTROLLER 6012 3 03 1 7 00 00 100 E6
$149.99
quality
Leeds  Northrup Circuit Board A4 054904
Leeds Northrup Circuit Board A4 054904
$495.00
quality
Leeds  Northrup 11250 0 to 22 Range Chart Paper 713 NIB Box of 100
Leeds Northrup 11250 0 to 22 Range Chart Paper 713 NIB Box of 100
$19.99
quality
L  N Leeds  Northrup 8690 2 Millivolt Potentiometer  9912 Run Up Box
L N Leeds Northrup 8690 2 Millivolt Potentiometer 9912 Run Up Box
$44.99
quality
Leeds  Northrup Potentiometer Facillity w 9462 A Galvanometer Primary Standard
Leeds Northrup Potentiometer Facillity w 9462 A Galvanometer Primary Standard
$1,900.00
quality
Vintage Leeds  and Northrup Light Beam Projection Galvanometer 2430 C
Vintage Leeds and Northrup Light Beam Projection Galvanometer 2430 C
$79.00
quality
LEEDS AND NORTHRUP INSTRUMENTS DELTA P CELL  90 NLG 83935B 2 NEW
LEEDS AND NORTHRUP INSTRUMENTS DELTA P CELL 90 NLG 83935B 2 NEW
$99.00
quality
LEEDS  NORTHRUP Genaral Radio Co Condenser Calibrator 75841 Rare Find
LEEDS NORTHRUP Genaral Radio Co Condenser Calibrator 75841 Rare Find
$107.59
quality
LEEDS  NORTHRUP 074495 USPP 074495
LEEDS NORTHRUP 074495 USPP 074495
$517.13
quality
LEEDS NORTHRUP KEVIN BRIDGE CAT NO 4288
LEEDS NORTHRUP KEVIN BRIDGE CAT NO 4288
$265.00
quality
Leeds Northrup 7073 1 03 105 6 50 129
Leeds Northrup 7073 1 03 105 6 50 129
$223.00
quality
Directions for STRIP CHART RECORDERS with MICROMAX MECHANISM Leeds Northrup
Directions for STRIP CHART RECORDERS with MICROMAX MECHANISM Leeds Northrup
$8.88
quality
LEEDS  NORTHRUP 074867 USPP 074867
LEEDS NORTHRUP 074867 USPP 074867
$236.25
quality
LN Decade Resistor Box 1 10K 4754 1ohm step 11K max LEEDS  NORTHRUP
LN Decade Resistor Box 1 10K 4754 1ohm step 11K max LEEDS NORTHRUP
$45.00
quality
L  N Leeds  Northrup 8690 2 Millivolt Potentiometer
L N Leeds Northrup 8690 2 Millivolt Potentiometer
$10.00
quality
Leeds  Northrup Resistance Boxes  Wheatstone Bridges Catalogue
Leeds Northrup Resistance Boxes Wheatstone Bridges Catalogue
$40.00
quality
Leeds  Northrup Distributed Processing Unit 555 2 F F
Leeds Northrup Distributed Processing Unit 555 2 F F
$495.00
quality
Leeds  Northrup Systems 064314
Leeds Northrup Systems 064314
$449.00
quality
Leeds and Northrup Systems Module Output Quad PAT 564 9 0 N 9406
Leeds and Northrup Systems Module Output Quad PAT 564 9 0 N 9406
$595.00
quality
Leeds  Northrup Systems 564 9 0 K
Leeds Northrup Systems 564 9 0 K
$495.00
quality
Leeds  Northrup Systems Circuit Board Counter Timer 056516
Leeds Northrup Systems Circuit Board Counter Timer 056516
$495.00
quality
Leeds  Northrup Module Input 056662
Leeds Northrup Module Input 056662
$495.00
quality
Leeds and Northrup Systems Module Relay Output 064319
Leeds and Northrup Systems Module Relay Output 064319
$495.00
quality
Leeds and Northrup Systems Module Digital 120 VAC 056521
Leeds and Northrup Systems Module Digital 120 VAC 056521
$495.00
quality
GENERAL SIGNAL LEEDS  NORTHRUP SPEEDOMAX RECORDER
GENERAL SIGNAL LEEDS NORTHRUP SPEEDOMAX RECORDER
$399.99
quality
Leeds and Northrup Systems Module Output Quad Pat 080401
Leeds and Northrup Systems Module Output Quad Pat 080401
$495.00
quality
Leeds and Northrup Keyboard 115 29757
Leeds and Northrup Keyboard 115 29757
$849.00
quality
Leeds  Northrup Electromax III Furance 2
Leeds Northrup Electromax III Furance 2
$49.95
quality
Leeds  Northrup Unit Of General Signal 056098 Rev
Leeds Northrup Unit Of General Signal 056098 Rev
$64.95
quality
LN LEEDS NORTHRUP 4210 THOMAS TYPE ONE OHM STANDARD WOOD BOX CASE ONLY
LN LEEDS NORTHRUP 4210 THOMAS TYPE ONE OHM STANDARD WOOD BOX CASE ONLY
$68.00
quality
Leeds  Northrup 046276 E3 Module Analyzer Control Board Card E2 1085
Leeds Northrup 046276 E3 Module Analyzer Control Board Card E2 1085
$785.25
quality
Leeds  Northrup 056478 Rev A1 B2 Interface Circuit Board Card E2 1086
Leeds Northrup 056478 Rev A1 B2 Interface Circuit Board Card E2 1086
$425.25
quality
LEEDS NORTHRUP 055867 SERVO AMPLIFIER FOR MULTIRANGE 165 250 RECORDERS B204322
LEEDS NORTHRUP 055867 SERVO AMPLIFIER FOR MULTIRANGE 165 250 RECORDERS B204322
$115.00
quality
VINTAGE LEEDS  NORTHRUP SELF INDUCTANCE Tester Milli Henrys
VINTAGE LEEDS NORTHRUP SELF INDUCTANCE Tester Milli Henrys
$40.00
quality
Leeds  Northrup CAT Manual Station 074825
Leeds Northrup CAT Manual Station 074825
$99.00
quality
Leeds  Northrup Speedomax Recorder 26198 1 800 108 081 Range 0 100
Leeds Northrup Speedomax Recorder 26198 1 800 108 081 Range 0 100
$150.00
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
$99.99
quality
LEEDS AND NORTHRUP D P TRANSMITTER
LEEDS AND NORTHRUP D P TRANSMITTER
$50.00
quality
LEEDS  NORTHRUP MODEL 4210 Reference Standard Specification Sheet
LEEDS NORTHRUP MODEL 4210 Reference Standard Specification Sheet
$12.00
quality
LEEDS  NORTHRUP MODEL 4221 B4222 B4223 B D C Resistance Standards Directs
LEEDS NORTHRUP MODEL 4221 B4222 B4223 B D C Resistance Standards Directs
$16.00
quality
LEEDS  NORTHRUP MODEL 4224 B A150 4224 B A300 DC Resistance Stand Instr Manua
LEEDS NORTHRUP MODEL 4224 B A150 4224 B A300 DC Resistance Stand Instr Manua
$28.00
quality
LEEDS  NORTHRUP MODEL 4397M Voltage Divider Resistive Directions
LEEDS NORTHRUP MODEL 4397M Voltage Divider Resistive Directions
$28.00
quality
Leeds and Northrup Company 4905 Series Conductivity Cell 4905 001 33 088 7 NEW
Leeds and Northrup Company 4905 Series Conductivity Cell 4905 001 33 088 7 NEW
$150.00
quality
LEEDS  NORTHRUP 228317 NSFP 228317
LEEDS NORTHRUP 228317 NSFP 228317
$10.37
quality
NEW LEEDS NORTHRUP 3 WAY VALVE STRAINER 3 4NPT PVC PLASTIC B276798
NEW LEEDS NORTHRUP 3 WAY VALVE STRAINER 3 4NPT PVC PLASTIC B276798
$30.00
quality
LEEDS  NORTHRUP MODEL 758275927593 D C Volt Boxes Direction
LEEDS NORTHRUP MODEL 758275927593 D C Volt Boxes Direction
$28.00
quality
Leeds  Northrup 022245 Control Card LN
Leeds Northrup 022245 Control Card LN
$275.00
quality
Leeds  Northrup 022230 Control Card LN
Leeds Northrup 022230 Control Card LN
$350.00
quality
Leeds  Northrup Model 8686 Millivolt Potentiometer Galvanometer  Directions
Leeds Northrup Model 8686 Millivolt Potentiometer Galvanometer Directions
$24.99
quality
Leeds  Northrup Model 8686 Millivolt Potentiometer Galvanometer and Directions
Leeds Northrup Model 8686 Millivolt Potentiometer Galvanometer and Directions
$24.99
quality
Leeds  Northrup LN 4755 resistance box NIST cald
Leeds Northrup LN 4755 resistance box NIST cald
$335.75
quality
LEEDS NORTHRUP STUDENTS POTENTIOMETER MODEL 7645 VINTAGE
LEEDS NORTHRUP STUDENTS POTENTIOMETER MODEL 7645 VINTAGE
$80.00
quality
Vintage Leeds  Northrup Co Potentiometer Cat No 8694 Philadelphia FREE SHIP
Vintage Leeds Northrup Co Potentiometer Cat No 8694 Philadelphia FREE SHIP
$99.99
quality
Leeds  Northrup 5430 A Test Set Galvanometer
Leeds Northrup 5430 A Test Set Galvanometer
$35.00
quality
Leeds  Northrup Potentiometer Indicator
Leeds Northrup Potentiometer Indicator
$49.99
quality
LEEDS  NORTHRUP 890801 NSPP 890801
LEEDS NORTHRUP 890801 NSPP 890801
$294.00
quality
MX 431 LEEDS AND NORTHRUP 444508 DRIVER BOARD AMPLIFIER NEW IN BOX
MX 431 LEEDS AND NORTHRUP 444508 DRIVER BOARD AMPLIFIER NEW IN BOX
$199.00
quality
Leeds  Northrup Chart Recorder mdl 201 11 000 NN21
Leeds Northrup Chart Recorder mdl 201 11 000 NN21
$159.98
quality
LEEDS NORTHRUP 7082 12 056340 PH ANALYZER SENSOR 120V 240V AC GOOD USED J5
LEEDS NORTHRUP 7082 12 056340 PH ANALYZER SENSOR 120V 240V AC GOOD USED J5
$169.99
quality
LEEDS  NORTHRUP 074826 USPP 074826
LEEDS NORTHRUP 074826 USPP 074826
$244.65
quality
LEEDS  NORTHRUP 074825 USPP 074825
LEEDS NORTHRUP 074825 USPP 074825
$440.48
quality
VINTAGE LEEDS  NORTHRUP POTENTIOMETER INDICATOR
VINTAGE LEEDS NORTHRUP POTENTIOMETER INDICATOR
$50.00
quality
LEEDS  NORTHRUP 8696 2 MILLIVOLT POTENTIOMETER
LEEDS NORTHRUP 8696 2 MILLIVOLT POTENTIOMETER
$20.00
quality
LEEDS  NORTHRUP ELECTRODE
LEEDS NORTHRUP ELECTRODE
$55.00
quality
LEEDS AND NORTHRUP STEPPING MOTOR P N 017982 NEW
LEEDS AND NORTHRUP STEPPING MOTOR P N 017982 NEW
$29.00
quality
Leeds  Northrup 2J3M13 G5 3 4 1 T Thermocouple
Leeds Northrup 2J3M13 G5 3 4 1 T Thermocouple
$42.50
quality
NEW LEEDS NORTHRUP 4908 1 33 000 20 02 000 CONDUCTIVITY CELL PH SENSOR D432635
NEW LEEDS NORTHRUP 4908 1 33 000 20 02 000 CONDUCTIVITY CELL PH SENSOR D432635
$400.00
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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