Leeds Northrup

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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 Portable Precision Potentiometer model 8662 MPN P 63 304
Leeds Northrup Portable Precision Potentiometer model 8662 MPN P 63 304
$149.99
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
Leeds  Northrup Temperature Potientiometer Galvanometer 8693
Leeds Northrup Temperature Potientiometer Galvanometer 8693
$30.00
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 DRRS 4394  4 Dial Manual
Leeds Northrup DRRS 4394 4 Dial Manual
$25.00
quality
LEEDS  NORTHRUP HISTORIC LAB VOLTAGE STANDARD
LEEDS NORTHRUP HISTORIC LAB VOLTAGE STANDARD
$400.00
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
$45.00
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
Leeds  Northrup Potentiometer
Leeds Northrup Potentiometer
$20.00
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
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 117481 Electrode PH Measuring Gel Filled Diffusion Type
Leeds Northrup 117481 Electrode PH Measuring Gel Filled Diffusion Type
$165.00
quality
Leeds and Northrup Instruments 056098 Working Free Shipping
Leeds and Northrup Instruments 056098 Working Free Shipping
$54.99
quality
Leeds  Northrup 12 Multi Purpose Recorder Speedomax 210 2 Channel
Leeds Northrup 12 Multi Purpose Recorder Speedomax 210 2 Channel
$99.00
quality
LEEDS NORTHRUP A1A1AX 445855 MOTHER CARD PCB CIRCUIT BOARD B1 B313095
LEEDS NORTHRUP A1A1AX 445855 MOTHER CARD PCB CIRCUIT BOARD B1 B313095
$80.53
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 LN model LT 3946 10000 Ohm Lab Standard Resistor
Leeds Northrup LN model LT 3946 10000 Ohm Lab Standard Resistor
$995.00
quality
LEEDS  NORTHRUP POWER SUPPLY 099012  FOR PARTS REPAIR
LEEDS NORTHRUP POWER SUPPLY 099012 FOR PARTS REPAIR
$25.00
quality
Leeds  Northrup 4030 B S 400 Ohms Resistor
Leeds Northrup 4030 B S 400 Ohms Resistor
$50.00
quality
VINTAGE 50s Leeds  Northrup Co Potentiometer NUCLEAR ERA
VINTAGE 50s Leeds Northrup Co Potentiometer NUCLEAR ERA
$240.00
quality
LEEDS  NORTHRUP Model 4232 PRECISION GUARDED WHEATSTONE BRIDGE
LEEDS NORTHRUP Model 4232 PRECISION GUARDED WHEATSTONE BRIDGE
$275.00
quality
LEEDS  NORTHRUP Model 7555 TYPE K 5 POTENTIOMETER
LEEDS NORTHRUP Model 7555 TYPE K 5 POTENTIOMETER
$250.00
quality
LEEDS  NORTHRUP Model 7554 TYPE K 4 POTENTIOMETER
LEEDS NORTHRUP Model 7554 TYPE K 4 POTENTIOMETER
$275.00
quality
Leeds  Northrup Model 4775 Decade Resistor Box Antique radio laboratory
Leeds Northrup Model 4775 Decade Resistor Box Antique radio laboratory
$12.00
quality
LEEDS  NORTHRUP THERMOCOUPLE CAT 8867 VINTAGE 1123
LEEDS NORTHRUP THERMOCOUPLE CAT 8867 VINTAGE 1123
$150.00
quality
LOT 2 LEEDS NORTHRUP 10970 4 PNEUMATIC CONVERTER 20PSI SUPPLY 3 15PSI B215359
LOT 2 LEEDS NORTHRUP 10970 4 PNEUMATIC CONVERTER 20PSI SUPPLY 3 15PSI B215359
$19.53
quality
LEEDS NORTHRUP 10970 2 ELECTRO PNEUMATIC CONVERTER TRANSDUCER B215371
LEEDS NORTHRUP 10970 2 ELECTRO PNEUMATIC CONVERTER TRANSDUCER B215371
$14.53
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
Vintage Leeds  Northrup Co Philadelphia Multiple Range Potentiometer Indicator
Vintage Leeds Northrup Co Philadelphia Multiple Range Potentiometer Indicator
$55.00
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 Schem
Leeds Northrup Manual 7552 Potentiometer Operating Directions Manual w Schem
$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
Leeds  Northrup Manual 9003 9004 Thermocouple Checking Furnaces Directions Man
Leeds Northrup Manual 9003 9004 Thermocouple Checking Furnaces Directions Man
$20.00
quality
Leeds  Northrup Oxygen Monitor Transmitter 3106 NNN 49385
Leeds Northrup Oxygen Monitor Transmitter 3106 NNN 49385
$649.00
quality
LEEDS NORTHRUP 056381 REV A B2 PCB CIRCUIT BOARD B471916
LEEDS NORTHRUP 056381 REV A B2 PCB CIRCUIT BOARD B471916
$55.00
quality
LEEDS NORTHRUP 056357 9451 018 DISPLAY LCD REV D D1 PCB CIRCUIT BOARD B471938
LEEDS NORTHRUP 056357 9451 018 DISPLAY LCD REV D D1 PCB CIRCUIT BOARD B471938
$500.00
quality
NEW LEEDS  NORTHRUP 032977 DC SERVO MOTOR 24 VDC 5400 RPM
NEW LEEDS NORTHRUP 032977 DC SERVO MOTOR 24 VDC 5400 RPM
$199.99
quality
LEEDS NORTHRUP 056332 REV B1 B2 PCB CIRCUIT BOARD B471925
LEEDS NORTHRUP 056332 REV B1 B2 PCB CIRCUIT BOARD B471925
$75.00
quality
LEEDS NORTHRUP 056357 CONTROL MODULE REV D1 PCB CIRCUIT BOARD B472037
LEEDS NORTHRUP 056357 CONTROL MODULE REV D1 PCB CIRCUIT BOARD B472037
$250.00
quality
LEEDS NORTHRUP 056352 PRINTED MODULE CARD REV D1 PCB CIRCUIT BOARD B472045
LEEDS NORTHRUP 056352 PRINTED MODULE CARD REV D1 PCB CIRCUIT BOARD B472045
$200.00
quality
LEEDS NORTHRUP 056381 REV B2 PCB CIRCUIT BOARD B472044
LEEDS NORTHRUP 056381 REV B2 PCB CIRCUIT BOARD B472044
$55.00
quality
LEEDS NORTHRUP SPEEDOMAX 1650 RECORDER 115 230 VAC 063205
LEEDS NORTHRUP SPEEDOMAX 1650 RECORDER 115 230 VAC 063205
$249.99
quality
LEEDS  NORTHRUP LN GENERAL SIGNAL MICROMAX 081103 20VAC 60Hz
LEEDS NORTHRUP LN GENERAL SIGNAL MICROMAX 081103 20VAC 60Hz
$500.00
quality
Leeds  Northrup Cleertrend Print Mechanism Adjustment Manual
Leeds Northrup Cleertrend Print Mechanism Adjustment Manual
$20.00
quality
Leeds  Northrup Speedomax W Series Recorder Instruction Manual w schematic
Leeds Northrup Speedomax W Series Recorder Instruction Manual w schematic
$20.00
quality
Leeds  Northrup Speedomax H  W Multipoint Recorders Instructions Manual
Leeds Northrup Speedomax H W Multipoint Recorders Instructions Manual
$25.00
quality
Leeds  Northrup Speedomax H Series Recorder Indicator Instruction Manual
Leeds Northrup Speedomax H Series Recorder Indicator Instruction Manual
$20.00
quality
Leeds  Northrup Speedomax H Series Parts ListIssue 7 1961
Leeds Northrup Speedomax H Series Parts ListIssue 7 1961
$20.00
quality
Leeds  Northrup Thermocouples Conversion Tables BookletIssue 2
Leeds Northrup Thermocouples Conversion Tables BookletIssue 2
$20.00
quality
Leeds  Northrup 8690 1 Rack Mounted Potentiometer Instruction Manual
Leeds Northrup 8690 1 Rack Mounted Potentiometer Instruction Manual
$20.00
quality
Leeds  Northrup 7651 Students Potentiometer Operating Manual
Leeds Northrup 7651 Students Potentiometer Operating Manual
$20.00
quality
Leeds  Northrup Manual Speedomax Type G Recorders Model S 60000 Series OPR SVC
Leeds Northrup Manual Speedomax Type G Recorders Model S 60000 Series OPR SVC
$35.00
quality
Leeds  Northrup Manual Speedomax Type G Recorders Mod S 60000 Ser OPR SVC SCH
Leeds Northrup Manual Speedomax Type G Recorders Mod S 60000 Ser OPR SVC SCH
$20.00
quality
Leeds  Northrup Trendscan 1000 Data Acquisition System Op Service Manual
Leeds Northrup Trendscan 1000 Data Acquisition System Op Service Manual
$36.00
quality
LEEDS NORTHRUP 056332 REV B2 PCB CIRCUIT BOARD B472034
LEEDS NORTHRUP 056332 REV B2 PCB CIRCUIT BOARD B472034
$75.00
quality
Leeds  Northrup Manual Directions for Galvanometer Used With Micromax Mechanism
Leeds Northrup Manual Directions for Galvanometer Used With Micromax Mechanism
$16.00
quality
LEEDS NORTHRUP 056305 POWER SUPPLY 115V AC REV L PCB CIRCUIT BOARD B472040
LEEDS NORTHRUP 056305 POWER SUPPLY 115V AC REV L PCB CIRCUIT BOARD B472040
$500.00
quality
Leeds  Northrup Manual Model S 40000 Series Micromax Recorders Directions Man
Leeds Northrup Manual Model S 40000 Series Micromax Recorders Directions Man
$20.00
quality
Leeds  Northrup Manual Conversion Tables for Thermocouples Issue 3
Leeds Northrup Manual Conversion Tables for Thermocouples Issue 3
$16.00
quality
Leeds  Northrup Manual Fault Location In Cables Booklet
Leeds Northrup Manual Fault Location In Cables Booklet
$20.00
quality
HONEYWELL LEEDS  NORTHRUP H2 ANAYLYZER 7866001111003
HONEYWELL LEEDS NORTHRUP H2 ANAYLYZER 7866001111003
$3,000.00
quality
Leeds  Northrup Manual Parts List for Speedomax H Recorder Issue 2 1956
Leeds Northrup Manual Parts List for Speedomax H Recorder Issue 2 1956
$16.00
quality
LEEDS  NORTHRUP 31400487 NSFP 31400487
LEEDS NORTHRUP 31400487 NSFP 31400487
$23.00
quality
Leeds  Northrup Manual Supplemental Parts List for Speedomax G Recorder 69955
Leeds Northrup Manual Supplemental Parts List for Speedomax G Recorder 69955
$16.00
quality
Leeds  Northrup Manual Speedomax G Model S Recorder Directions Manual w Schem
Leeds Northrup Manual Speedomax G Model S Recorder Directions Manual w Schem
$28.00
quality
LEEDS  NORTHRUP 5305 Test Set Resistance Measurements Galvanometer Variable LN
LEEDS NORTHRUP 5305 Test Set Resistance Measurements Galvanometer Variable LN
$95.00
quality
Leeds  Northrup Manual Speedomax H Recorder Directions Man w Schem Issue 5
Leeds Northrup Manual Speedomax H Recorder Directions Man w Schem Issue 5
$32.00
quality
Leeds  Northrup Manual Speedomax H Recorder Directions Man w Schem Issue 12
Leeds Northrup Manual Speedomax H Recorder Directions Man w Schem Issue 12
$32.00
quality
LEEDS NORTHRUP 056352 PRINTED MODULE CARD REV F1 D1 PCB CIRCUIT BOARD B471922
LEEDS NORTHRUP 056352 PRINTED MODULE CARD REV F1 D1 PCB CIRCUIT BOARD B471922
$200.00
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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