Leeds Northrup

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VTG LEEDS  NORTHRUP POTENTIOMETER TEMPERATURE INDICATOR SINCLAIR OIL
VTG LEEDS NORTHRUP POTENTIOMETER TEMPERATURE INDICATOR SINCLAIR OIL
$29.99
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
$89.99
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
$359.99
quality
Refurbished Leeds  Northrup 074417 PC Control Board Rev CR16 Tested
Refurbished Leeds Northrup 074417 PC Control Board Rev CR16 Tested
$449.99
quality
Vintage LEEDS  NORTHRUP Multiple Range Potentiometer Indicator  Directions LN
Vintage LEEDS NORTHRUP Multiple Range Potentiometer Indicator Directions LN
$65.00
quality
New Leeds  Northrup 074441 Converter Board Rev A2 Control Board
New Leeds Northrup 074441 Converter Board Rev A2 Control Board
$314.99
quality
Leeds Northrup PCB Circuit Board 055872
Leeds Northrup PCB Circuit Board 055872
$259.99
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
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
$314.99
quality
LEEDS  NORTHRUP MODEL 8686 MILLIVOLT POTENTIOMETER
LEEDS NORTHRUP MODEL 8686 MILLIVOLT POTENTIOMETER
$179.00
quality
New Leeds  Northrup 074421 Memory Card Rev C
New Leeds Northrup 074421 Memory Card Rev C
$89.99
quality
Honeywell Leeds Northrup 074419 Control Board LN Rev C
Honeywell Leeds Northrup 074419 Control Board LN Rev C
$337.50
quality
Leeds Northrup Dissolved Oxygen Meter 20 ppm 20 ppb
Leeds Northrup Dissolved Oxygen Meter 20 ppm 20 ppb
$140.00
quality
Vintage Rare Western Electric Null Voltage Test Set KS 10376 by Leeds
Vintage Rare Western Electric Null Voltage Test Set KS 10376 by Leeds
$9.99
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 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 SPEEDOMAX CHART RECORDER
LEEDS NORTHRUP SPEEDOMAX CHART RECORDER
$149.99
quality
Vintage Leeds  Northrup Temperature Potentiometer model 8693 Untested
Vintage Leeds Northrup Temperature Potentiometer model 8693 Untested
$25.00
quality
LEEDS  NORTHRUP AC DC DECADE RESISTOR 4755
LEEDS NORTHRUP AC DC DECADE RESISTOR 4755
$125.00
quality
LEEDS  NORTHRUP DECADE RESISTANCE BOX 4754
LEEDS NORTHRUP DECADE RESISTANCE BOX 4754
$125.00
quality
Leeds  Northrup 7082 18 056356 Conductivity Meter NEW and Never Installed
Leeds Northrup 7082 18 056356 Conductivity Meter NEW and Never Installed
$575.00
quality
New Leeds  Northrup Pressure Transmitter Model 2610 2610 102 11 2 00 0000 NIB
New Leeds Northrup Pressure Transmitter Model 2610 2610 102 11 2 00 0000 NIB
$999.99
quality
LEEDS  NORTHRUP LN 9828 NULL DETECTOR GUARDED POTENTIOMETER 7556 bb
LEEDS NORTHRUP LN 9828 NULL DETECTOR GUARDED POTENTIOMETER 7556 bb
$400.00
quality
LN LEEDS NORTHRUP 7075 1 CONDUCTIVITY TESTER METER SPECIFIC CONDUCTANCE
LN LEEDS NORTHRUP 7075 1 CONDUCTIVITY TESTER METER SPECIFIC CONDUCTANCE
$19.99
quality
Leeds  Northrup 7082 12 PH Analyzer TLE2206
Leeds Northrup 7082 12 PH Analyzer TLE2206
$195.00
quality
LEEDS  NORTHRUP 7082 12 USPP 708212
LEEDS NORTHRUP 7082 12 USPP 708212
$903.00
quality
LEEDS  NORTHRUP LN CIRCUIT BOARD 074867
LEEDS NORTHRUP LN CIRCUIT BOARD 074867
$65.00
quality
Leeds  Northrup 2J3M13 G5 3 4 1 T Thermocouple
Leeds Northrup 2J3M13 G5 3 4 1 T Thermocouple
$42.50
quality
VINTAGE LEEDS  NORTHRUP SELF INDUCTANCE Tester Milli Henrys
VINTAGE LEEDS NORTHRUP SELF INDUCTANCE Tester Milli Henrys
$40.00
quality
LEEDS NORTHRUP KCI 24 017138W 120V AC 2P AC ELECTRIC MOTOR D457292
LEEDS NORTHRUP KCI 24 017138W 120V AC 2P AC ELECTRIC MOTOR D457292
$84.00
quality
Leeds  Northrup Model 8692 Type K Temperature Potentiometer
Leeds Northrup Model 8692 Type K Temperature Potentiometer
$100.00
quality
LEEDS  NORTHRUP TEMPERATURE TRANSDUCER ROTARY SENSOR 019332
LEEDS NORTHRUP TEMPERATURE TRANSDUCER ROTARY SENSOR 019332
$9.00
quality
Leeds  Northrup LN model LT 2422 200 Ohm Lab Standard Resistor certified
Leeds Northrup LN model LT 2422 200 Ohm Lab Standard Resistor certified
$895.00
quality
Leeds  Northrup LN model LT 3031 2000 Ohm Lab Standard Resistor certified
Leeds Northrup LN model LT 3031 2000 Ohm Lab Standard Resistor certified
$895.00
quality
Leeds  Northrup LN Model LT 2435 3000 Ohm Lab Standard Resistor certified
Leeds Northrup LN Model LT 2435 3000 Ohm Lab Standard Resistor certified
$895.00
quality
Leeds  Northrup LN model LT 4024 4000 Ohm Lab Standard Resistor certified
Leeds Northrup LN model LT 4024 4000 Ohm Lab Standard Resistor certified
$895.00
quality
Leeds  Northrup LN model LT 4283 675 Ohm Lab Standard Resistor certified
Leeds Northrup LN model LT 4283 675 Ohm Lab Standard Resistor certified
$505.75
quality
Leeds  Northrup LN 2 Ohm Lab Standard Resistor certified
Leeds Northrup LN 2 Ohm Lab Standard Resistor certified
$505.75
quality
Leeds  Northrup LN 3 Ohm Lab Standard Resistor certified
Leeds Northrup LN 3 Ohm Lab Standard Resistor certified
$148.75
quality
LeedsNorthrup LN model LT 3636 36 Ohm Lab Standard Resistor certified
LeedsNorthrup LN model LT 3636 36 Ohm Lab Standard Resistor certified
$505.75
quality
LeedsNorthrup LN model LT 2801 500 Ohm Lab Standard Resistor certified
LeedsNorthrup LN model LT 2801 500 Ohm Lab Standard Resistor certified
$895.00
quality
Leeds  Northrup 1634078 Standard Resistor 1000 Ohm TESTED
Leeds Northrup 1634078 Standard Resistor 1000 Ohm TESTED
$39.99
quality
LEEDS  NORTHRUP 8691 2 USPP 86912
LEEDS NORTHRUP 8691 2 USPP 86912
$84.00
quality
LEEDS  NORTHRUP 22850 GALVANOMETER
LEEDS NORTHRUP 22850 GALVANOMETER
$132.00
quality
Leeds  Northrup Model 8692 Temperature Potentiometer
Leeds Northrup Model 8692 Temperature Potentiometer
$29.99
quality
LEEDS NORTHRUP 5305 RESISTENCE BRIDGE
LEEDS NORTHRUP 5305 RESISTENCE BRIDGE
$125.00
quality
LEEDS  NORTHRUP LN 2420B GALVANOMETER
LEEDS NORTHRUP LN 2420B GALVANOMETER
$132.00
quality
LeedsNorthrup Standard Resistor 1001 Ohm
LeedsNorthrup Standard Resistor 1001 Ohm
$175.00
quality
NEW LEEDS NORTHRUP 022973 DISPOSABLE MARKER BOX OF 3
NEW LEEDS NORTHRUP 022973 DISPOSABLE MARKER BOX OF 3
$20.00
quality
LEEDS  NORTHRUP 16 PT RELAY OUTPUT MOD 064319 USED M O
LEEDS NORTHRUP 16 PT RELAY OUTPUT MOD 064319 USED M O
$49.99
quality
Red Leeds Northrup Chart Recorder Pen 82 80 3002 03 RED MKR
Red Leeds Northrup Chart Recorder Pen 82 80 3002 03 RED MKR
$15.00
quality
Green Leeds Northrup Chart Recorder Pen 82 80 1004 03 GREEN
Green Leeds Northrup Chart Recorder Pen 82 80 1004 03 GREEN
$9.95
quality
Blue Leeds Northrup Chart Recorder Pen 82 80 2003 03 BLUE
Blue Leeds Northrup Chart Recorder Pen 82 80 2003 03 BLUE
$9.95
quality
Leeds  Northrup Model 8686 Millivolt potentiometer
Leeds Northrup Model 8686 Millivolt potentiometer
$50.00
quality
LEEDS  NORTHRUP LN BARBER COLMAN ACTUATOR 10218 1 0
LEEDS NORTHRUP LN BARBER COLMAN ACTUATOR 10218 1 0
$75.00
quality
Leeds  Northrup LN 2430 C light beam galvanometer NIST cald
Leeds Northrup LN 2430 C light beam galvanometer NIST cald
$165.75
quality
LEEDS NORTHRUP  MEASURING ELECTRODE 117390 A UNIT OF GENERAL SIGNAL
LEEDS NORTHRUP MEASURING ELECTRODE 117390 A UNIT OF GENERAL SIGNAL
$33.00
quality
LEEDS NORTHRUP  TEMPERATURE SENSOR 022289
LEEDS NORTHRUP TEMPERATURE SENSOR 022289
$25.00
quality
LEEDS  NORTHRUP Antique Open Dial Wheatstone Bridge
LEEDS NORTHRUP Antique Open Dial Wheatstone Bridge
$150.00
quality
LEEDS  NORTHRUP CO 5305 TEST SET RESISTANCE MEASUREMENTS GALVANOMETER
LEEDS NORTHRUP CO 5305 TEST SET RESISTANCE MEASUREMENTS GALVANOMETER
$67.50
quality
LEEDS  NORTHRUP CONDUCTIVITY CELL TEMPERATURE 20 FT GOLD 4905 04 33 088 20
LEEDS NORTHRUP CONDUCTIVITY CELL TEMPERATURE 20 FT GOLD 4905 04 33 088 20
$40.00
quality
Leeds  Northrup Instruments CAT Manual Station 074825 Programmable Input Output
Leeds Northrup Instruments CAT Manual Station 074825 Programmable Input Output
$98.00
quality
Lot 4 LEEDS  NORTHRUP SPEEDOMAX G CHART PAPER 100 LINE
Lot 4 LEEDS NORTHRUP SPEEDOMAX G CHART PAPER 100 LINE
$31.99
quality
Leeds  Northrup Star I Industrial Controller
Leeds Northrup Star I Industrial Controller
$100.00
quality
LEEDS  NORTHRUP LN 2420B GALVANOMETER
LEEDS NORTHRUP LN 2420B GALVANOMETER
$49.95
quality
LEEDS  NORTHRUP 080421 ANALOG INPUT
LEEDS NORTHRUP 080421 ANALOG INPUT
$100.00
quality
Leeds  Northrup Speedomax W Chart Paper 490173
Leeds Northrup Speedomax W Chart Paper 490173
$7.13
quality
CT ESTATE ATTIC FIND 1929 VINTAGE LEEDS AND NORTHRUP TYPE K POTENTIOMETER
CT ESTATE ATTIC FIND 1929 VINTAGE LEEDS AND NORTHRUP TYPE K POTENTIOMETER
$99.99
quality
Leeds  Northrup 2610 Differential Transmitter 2610 103 12 2 00 400 302 809
Leeds Northrup 2610 Differential Transmitter 2610 103 12 2 00 400 302 809
$250.00
quality
LEEDS  NORTHRUP A1A2A1X CIRCUIT BOARD 063908WARRANTY
LEEDS NORTHRUP A1A2A1X CIRCUIT BOARD 063908WARRANTY
$185.00
quality
Leeds  Northrup DC Null Detector 9834 2 w Tubes
Leeds Northrup DC Null Detector 9834 2 w Tubes
$29.50
quality
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
$69.00
quality
LEEDS NORTHRUP LN MODEL 8690 MILLIVOLT POTENTIOMETER GALVANOMETER
LEEDS NORTHRUP LN MODEL 8690 MILLIVOLT POTENTIOMETER GALVANOMETER
$52.00
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
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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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