Leeds Northrup

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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
$20.00
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
$28.00
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 1963
Leeds Northrup Manual Fault Location In Cables Booklet 1963
$16.00
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 4223 B 001 Ohm Standard Resistor
Leeds Northrup 4223 B 001 Ohm Standard Resistor
$599.99
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 4112 04112 12 D1 F 000 DEW POINT TRANSMITTER 11 45V DC D393309
LEEDS NORTHRUP 4112 04112 12 D1 F 000 DEW POINT TRANSMITTER 11 45V DC D393309
$90.28
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
Leeds  Northrup Manual Speedomax H Recorder Directions Man w Schem Issue 20
Leeds Northrup Manual Speedomax H Recorder Directions Man w Schem Issue 20
$32.00
quality
Leeds  Northrup Manual Speedomax H  W Recorder Direct Man w Schem Issue 7
Leeds Northrup Manual Speedomax H W Recorder Direct Man w Schem Issue 7
$32.00
quality
Leeds  Northrup Manual Speedomax H  W Recorder Direct Man w Schem Issue 3
Leeds Northrup Manual Speedomax H W Recorder Direct Man w Schem Issue 3
$32.00
quality
LEEDS NORTHRUP 056305 POWER SUPPLY 115V AC REV K K PCB CIRCUIT BOARD B471931
LEEDS NORTHRUP 056305 POWER SUPPLY 115V AC REV K K PCB CIRCUIT BOARD B471931
$500.00
quality
Leeds  Northrup Manual Speedomax H  W Recorder Direct Man w Schem Issue 8
Leeds Northrup Manual Speedomax H W Recorder Direct Man w Schem Issue 8
$32.00
quality
Leeds  Northrup Manual Speedomax W Recorder Directions Man w Schem Issue 2
Leeds Northrup Manual Speedomax W Recorder Directions Man w Schem Issue 2
$32.00
quality
Used Leeds  Northrup pH Analyzer PLC 7082 41 086311 120 240V 50 60HZ 15VA
Used Leeds Northrup pH Analyzer PLC 7082 41 086311 120 240V 50 60HZ 15VA
$299.00
quality
Leeds  Northrup Manual Speedomax W Recorder Directions Man w Schem Issue 3
Leeds Northrup Manual Speedomax W Recorder Directions Man w Schem Issue 3
$32.00
quality
Leeds  Northrup Manual Speedomax W Recorder Directions Man w Schem Issue 6
Leeds Northrup Manual Speedomax W Recorder Directions Man w Schem Issue 6
$32.00
quality
Leeds  Northrup 070253 Control Card 70253 LN
Leeds Northrup 070253 Control Card 70253 LN
$199.00
quality
Leeds  Northrup 046315 Control Card 46315 LN
Leeds Northrup 046315 Control Card 46315 LN
$95.00
quality
Leeds  Northrup 046315
Leeds Northrup 046315
$375.00
quality
Leeds Northrup 445846
Leeds Northrup 445846
$150.00
quality
LeedsNorthrup Standard Resistor 1001 Ohm
LeedsNorthrup Standard Resistor 1001 Ohm
$175.00
quality
Leeds  Northrup 5430 A Test Set Galvanometer In Oak Case WWII ERA
Leeds Northrup 5430 A Test Set Galvanometer In Oak Case WWII ERA
$39.00
quality
NEW LEEDS  NORTHRUP CO GEAR MOTOR KCI 24 KCI24 017342 25 120 VOLT 50 60 HZ
NEW LEEDS NORTHRUP CO GEAR MOTOR KCI 24 KCI24 017342 25 120 VOLT 50 60 HZ
$39.95
quality
Used Leeds  Northrup pH Analyzer PLC 7082 41 086311 60 day warranty
Used Leeds Northrup pH Analyzer PLC 7082 41 086311 60 day warranty
$195.00
quality
Leeds  Northrup Model 8070 Standard Resistor
Leeds Northrup Model 8070 Standard Resistor
$152.10
quality
NEW LEEDS  NORTHRUP 152137 TEMPERATURE COMPENSATOR 4 3 4 LONG PROBE
NEW LEEDS NORTHRUP 152137 TEMPERATURE COMPENSATOR 4 3 4 LONG PROBE
$99.99
quality
LEEDS  NORTHRUP 117481 NSFP 117481
LEEDS NORTHRUP 117481 NSFP 117481
$142.80
quality
LEEDS  NORTHRUP 7794 NSFP 7794
LEEDS NORTHRUP 7794 NSFP 7794
$336.00
quality
LEEDS  NORTHRUP 7591 VOLT BOX POTENTIOMETER IN GREAT CONDITION
LEEDS NORTHRUP 7591 VOLT BOX POTENTIOMETER IN GREAT CONDITION
$83.50
quality
NEW Leeds  Northrup Speedomax 250 Chart Paper Roll PN 01159573 545434 G
NEW Leeds Northrup Speedomax 250 Chart Paper Roll PN 01159573 545434 G
$15.99
quality
NEW LEEDS  NORTHRUP 7075 3 147 120 202 000 PH ANALYZER 70753147120202000
NEW LEEDS NORTHRUP 7075 3 147 120 202 000 PH ANALYZER 70753147120202000
$500.00
quality
VINTAGE ELECTROMAX LEEDS  NORTHRUP LN AMPLIFIER
VINTAGE ELECTROMAX LEEDS NORTHRUP LN AMPLIFIER
$50.00
quality
LEEDS  NORTHRUP 228261 PC BOARD
LEEDS NORTHRUP 228261 PC BOARD
$595.00
quality
LEEDS  NORTHRUP SPDT SYNCHRONOUS CONVERTER 354156
LEEDS NORTHRUP SPDT SYNCHRONOUS CONVERTER 354156
$50.00
quality
Leeds and Northrup 130031 Voltage Standard Power Supply
Leeds and Northrup 130031 Voltage Standard Power Supply
$135.00
quality
NEW LEEDS NORTHRUP 7079 PH REDOX PRESSURE TRANSMITTER D487029
NEW LEEDS NORTHRUP 7079 PH REDOX PRESSURE TRANSMITTER D487029
$160.00
quality
Leeds  Northrup Model 4775 Decade Resistor Box
Leeds Northrup Model 4775 Decade Resistor Box
$39.99
quality
LEEDS  NORTHRUP LN DIGITAL CHART RECORDER in BOX LCH1
LEEDS NORTHRUP LN DIGITAL CHART RECORDER in BOX LCH1
$150.00
quality
Leeds and Northrup chart paper 690112
Leeds and Northrup chart paper 690112
$5.00
quality
LEEDS  NORTHRUP LN DIGITAL CHART RECORDER in BOX LCH2
LEEDS NORTHRUP LN DIGITAL CHART RECORDER in BOX LCH2
$100.00
quality
Leeds  Northrup Portable Precision Potentiometer w Directions  Note Book
Leeds Northrup Portable Precision Potentiometer w Directions Note Book
$125.00
quality
Vintage Leeds  Northrup Temperature Potentiometer model 8693 Untested
Vintage Leeds Northrup Temperature Potentiometer model 8693 Untested
$9.99
quality
LEEDS  NORTHRUP LN MULTIPLE RANGE POTENTIOMETER INDICATOR
LEEDS NORTHRUP LN MULTIPLE RANGE POTENTIOMETER INDICATOR
$50.00
quality
LEEDS NORTHRUP 056098 LOOP DIGITAL D CONTROLLER B440222
LEEDS NORTHRUP 056098 LOOP DIGITAL D CONTROLLER B440222
$157.13
quality
Leeds  Northrup Star I Industrial Controller
Leeds Northrup Star I Industrial Controller
$100.00
quality
LEEDS  NORTHRUP K5 9534 L5 UNBALANCED 750 ATTENUATOR
LEEDS NORTHRUP K5 9534 L5 UNBALANCED 750 ATTENUATOR
$175.00
quality
LEEDS AND NORTHRUP 8686 IS A MILLIVOLT POTENTIOMETER
LEEDS AND NORTHRUP 8686 IS A MILLIVOLT POTENTIOMETER
$60.00
quality
LEEDS  NORTHRUP 5305 Test Set Resistance Measurements Galvanometer Variable LN
LEEDS NORTHRUP 5305 Test Set Resistance Measurements Galvanometer Variable LN
$99.00
quality
NEW LEEDS  NORTHRUP LOGIC BOARD 046263 NEW NO BOX
NEW LEEDS NORTHRUP LOGIC BOARD 046263 NEW NO BOX
$679.99
quality
Leeds Northrup 445855 Rev B 1 Mother Card A A1A1A1X
Leeds Northrup 445855 Rev B 1 Mother Card A A1A1A1X
$159.60
quality
Leeds and Northrup 445857 Rev C servo amplifier A1A1A1XA1
Leeds and Northrup 445857 Rev C servo amplifier A1A1A1XA1
$99.60
quality
Leeds  Northrup 4040B
Leeds Northrup 4040B
$395.00
quality
Leeds  Northrup 4045B
Leeds Northrup 4045B
$395.00
quality
NEW LEEDS NORTHRUP 070239 0 500 MICROMHOS CM CONDUCTANCE METER D460825
NEW LEEDS NORTHRUP 070239 0 500 MICROMHOS CM CONDUCTANCE METER D460825
$100.00
quality
LEEDS AND NORTHRUP CONDUCTIVITY CELL 4801 10 03 11 000
LEEDS AND NORTHRUP CONDUCTIVITY CELL 4801 10 03 11 000
$50.00
quality
LEEDS  NORTHRUP 7074 71 01 606 000 USPP 70747101606000
LEEDS NORTHRUP 7074 71 01 606 000 USPP 70747101606000
$49.24
quality
LEEDS  NORTHRUP 7074 71 01 641 000 USPP 70747101641000
LEEDS NORTHRUP 7074 71 01 641 000 USPP 70747101641000
$49.24
quality
LEEDS  NORTHRUP 114372 NSFP 114372
LEEDS NORTHRUP 114372 NSFP 114372
$53.03
quality
LEEDS AND NORTHRUP SERIES 165 250 SPEEDOMAX RECORDER
LEEDS AND NORTHRUP SERIES 165 250 SPEEDOMAX RECORDER
$1,099.99
quality
081103 MICROMAX LEEDS NORTHRUP INTERFACE CONTROLLER
081103 MICROMAX LEEDS NORTHRUP INTERFACE CONTROLLER
$109.00
quality
Leeds  Northrup Catalog No 2400B Mystery
Leeds Northrup Catalog No 2400B Mystery
$299.00
quality
LEEDS  NORTHRUP ELECTROMAX 6013 3 04 1 7 00 00 100 Controller
LEEDS NORTHRUP ELECTROMAX 6013 3 04 1 7 00 00 100 Controller
$319.99
quality
LEEDS  NORTHRUP Test Set Resistance Measurements Galvanometer w Wooden Box USN
LEEDS NORTHRUP Test Set Resistance Measurements Galvanometer w Wooden Box USN
$79.99
quality
LEEDS  NORTHRUP instruments CONTROLLER general signal
LEEDS NORTHRUP instruments CONTROLLER general signal
$333.00
quality
LEEDS NORTHRUP 8693 TEMPERATURE POTENTIOMETER 15V AC 1 2MV AC 1MA B336380
LEEDS NORTHRUP 8693 TEMPERATURE POTENTIOMETER 15V AC 1 2MV AC 1MA B336380
$40.68
quality
8 LEEDS  NORTHRUP OIL IMMERSION 10 10000 OHMS RESISTOR RESISTANCE STANDARDS
8 LEEDS NORTHRUP OIL IMMERSION 10 10000 OHMS RESISTOR RESISTANCE STANDARDS
$353.53
quality
LEEDS  NORTHRUP POTENTIOMETER WOODEN CASE Scintilla Bendix RANGE INDICATOR LN
LEEDS NORTHRUP POTENTIOMETER WOODEN CASE Scintilla Bendix RANGE INDICATOR LN
$45.00
quality
LEEDS NORTHRUP 8691 MILLIVOLT POTENTIOMETER 15V AC 0 111 MV AC B336389
LEEDS NORTHRUP 8691 MILLIVOLT POTENTIOMETER 15V AC 0 111 MV AC B336389
$40.68
quality
Leeds  Northrup 063908 Point Expansion Relay Board
Leeds Northrup 063908 Point Expansion Relay Board
$449.00
quality
LEEDS  NORTHRUP 205156 USPP 205156
LEEDS NORTHRUP 205156 USPP 205156
$1,095.15
quality
NEW LEEDS NORTHRUP 7866 THERMAL CONDUCTIVITY ANALYZER METER 115V AC 25VA B248712
NEW LEEDS NORTHRUP 7866 THERMAL CONDUCTIVITY ANALYZER METER 115V AC 25VA B248712
$203.68
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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