GB2286677A - Digital scale rule - Google Patents

Digital scale rule Download PDF

Info

Publication number
GB2286677A
GB2286677A GB9402849A GB9402849A GB2286677A GB 2286677 A GB2286677 A GB 2286677A GB 9402849 A GB9402849 A GB 9402849A GB 9402849 A GB9402849 A GB 9402849A GB 2286677 A GB2286677 A GB 2286677A
Authority
GB
United Kingdom
Prior art keywords
digital scale
rule
scale rule
calibrations
numerals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9402849A
Other versions
GB9402849D0 (en
Inventor
Howard Curtis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9402849A priority Critical patent/GB2286677A/en
Publication of GB9402849D0 publication Critical patent/GB9402849D0/en
Publication of GB2286677A publication Critical patent/GB2286677A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/02—Rulers with scales or marks for direct reading
    • G01B3/04—Rulers with scales or marks for direct reading rigid

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

A digital scale rule which may be either 150mm long or 300mm long, may have the calibrations and the numerals variable, or the calibrations static and the numerals variable. Solar energy cells or balleries (4) power microprocessors which determine the positions of the calibrations and numerals in a liquid crystal display (2). Touching numbers on the pressure pad (6) in a chosen sequence will activate the microprocessors to arrange the calibrations and the numerals in the liquid crystal display to the chosen scale. <IMAGE>

Description

DIGITAL SCALE RUZ This invention relates to a digital scale rule Scale rules are used by architects,engineers,surveyors, students,designers and many others all over the world for the purpose of measuring drawings and maps.
Existing conventional scale rules are available in two main types e.g flat or triangular scale rules with embossed calibrations and numerals on both sides of their edges and are either I50mm or 300mm long.
According to the present invention the digital scale rule employs microprocessors and liquid crystal diplays (LCD's) which will be powered by either batteries or solar energy cells.This combination of elements will provide as many different scales as that of three to four separate conventional scale rules e.g it will be possible to select any scale from I:I to I: 5000 in the metric scale.
The digital scale rule would be manufactured in both 150mm and 300mm long in either metric or imperial calibrations and numerals.
A specific embodiment of the invention will now be descibed by way of example with reference to the accompanying drawing in which Figure I shows an axonometric projection of a I50mm long digital scale rule in which both the calibrations and the numerals are variable,see also the cross section.
Figure 2 shows an axonometric projection of part of the digital scale rule in which the calibrations are static and the numerals are variable,see also the cross section.
Keferring to the axoometric drawing and cross section in Figure I the calibrations I and the numerals IA on the LCD block are variable and will alter to the selected scale.The clear plastic cover 2 is to protect the LCD block.The injection moulded body is 3 and the solar energy cells or batteries location is 4.The numbers 1,2,3,4,5,6,7 are indicated by 5 and are printed on the pressure pad 6.By touching the numbers on the pressure pad in the correct sequence the required scale will be selected e.g touching the number I then the 0 then the 0 again the scale indicator 7 will confirm a selected scale of I:I04 at the same time both the calibrations and numerals on the LCD will indicate the chosen scale.
The letter 'C' also printed on the pressure pad and indicated by 8 when touched will cancel the last selected scale and 'ON' indicated by 9 is touched in order to power the microprocessors to ready the digital scale rule for use.Touching the 'ON' again shuts off the power in order to conserve energy.
The cross sections of the digital scale rule in both Figures I and 2 shows IO as the internal space in the body of the digital scale rule for the necessary electronic elements required for it's operation.
Referring to the axonometric drawing of part of the digital scale rule and the cross section in Figure 2 the calibrations I are static i.e embossed or printed on the plastic edge of the digital sclae rule.The numerals indicated by IA are variable and will alter to the selected scale.
In all other aspects the digital scale rule shown in Figure 2 embodies the same features as those specified in the drawing of the digital scale rule in Figure I.

Claims (6)

  1. I.A digital scale rule employing microprocessors and liquid crystal displays (LGD's) which will be powerd by solar energy cells or batteries,numbers on the pressure pad, when touched,will facilitate a range of scales avilable in the digital scale rule,imperial and metric scales could be achieved in separate digital scale rules.
  2. 2.A digital scale rule as claimed in Claim I,wherein microprocessors are employed to activate the liquid crystal displays (LCD's).
  3. 3.A digital scale rule as claimed in Claim I or Claim 2, herein the liquid crystal displays (LCD's) contain a range of different scales.
  4. 4.A digital scale rule as claimed in Claim I or Claim 2, wherein solar energy cells or batteries power the microprocessors.
  5. 5.A digital scale rule as claimed in Claim I or Claim 2 or Claim 3 or Claim 4,wherein touching the numbers on the pressure pad will facilitate a range of different scales,in either the imperial or the metric system in separate digital scale rules.
  6. 6.A digital scale rule substantially as described herein, with reference to Figures I and 2 of the drawing.
GB9402849A 1994-02-15 1994-02-15 Digital scale rule Withdrawn GB2286677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9402849A GB2286677A (en) 1994-02-15 1994-02-15 Digital scale rule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9402849A GB2286677A (en) 1994-02-15 1994-02-15 Digital scale rule

Publications (2)

Publication Number Publication Date
GB9402849D0 GB9402849D0 (en) 1994-04-06
GB2286677A true GB2286677A (en) 1995-08-23

Family

ID=10750378

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9402849A Withdrawn GB2286677A (en) 1994-02-15 1994-02-15 Digital scale rule

Country Status (1)

Country Link
GB (1) GB2286677A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2312510A (en) * 1996-04-27 1997-10-29 Nigel Geoffrey Ley Electronic ruler
GB2340607A (en) * 1998-08-14 2000-02-23 Patrick Hartmann Kelly Electronic ruler
NL1022385C2 (en) * 2003-01-14 2004-07-15 Antonius Gerhardus Be Busscher Ruler for e.g. bricklaying, comprises data input device, processor and display for calculated marking positions and intervals
GB2419414A (en) * 2004-10-23 2006-04-26 Erik Juel Jacobsen Ruler
GB2445797A (en) * 2007-01-19 2008-07-23 Michael Cross Scale rule with digital display
AU2003245124B2 (en) * 2002-07-24 2009-11-12 Evatayhow Holdings Pty Ltd Theft deterrence security system
CN103615944A (en) * 2013-11-19 2014-03-05 京东方科技集团股份有限公司 Ruler

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2036394A (en) * 1977-06-24 1980-06-25 Woo J Electronic rule for precise destance measurement and distance setting
GB2114747A (en) * 1982-02-16 1983-08-24 Corrtronic Ruler
FR2555779A1 (en) * 1983-11-30 1985-05-31 Delecluse Brigitte Device for directly reading, by display, a dimension on a plan whatever its scale
GB2150888A (en) * 1983-12-06 1985-07-10 Romano Mario Cooper Ruler with variable scale
FR2558634A1 (en) * 1984-01-06 1985-07-26 Sautereau Jacques Multi-scale plotting and/or measuring instrument
DE4114350A1 (en) * 1991-05-02 1992-11-05 Markus Geissner Draughtsman's rule with switchable LCD scale-ratio indicator - has power source supplying LCD elements along edge of rule, selected by pushbuttons

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2036394A (en) * 1977-06-24 1980-06-25 Woo J Electronic rule for precise destance measurement and distance setting
GB2114747A (en) * 1982-02-16 1983-08-24 Corrtronic Ruler
FR2555779A1 (en) * 1983-11-30 1985-05-31 Delecluse Brigitte Device for directly reading, by display, a dimension on a plan whatever its scale
GB2150888A (en) * 1983-12-06 1985-07-10 Romano Mario Cooper Ruler with variable scale
FR2558634A1 (en) * 1984-01-06 1985-07-26 Sautereau Jacques Multi-scale plotting and/or measuring instrument
DE4114350A1 (en) * 1991-05-02 1992-11-05 Markus Geissner Draughtsman's rule with switchable LCD scale-ratio indicator - has power source supplying LCD elements along edge of rule, selected by pushbuttons

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2312510A (en) * 1996-04-27 1997-10-29 Nigel Geoffrey Ley Electronic ruler
GB2340607A (en) * 1998-08-14 2000-02-23 Patrick Hartmann Kelly Electronic ruler
AU2003245124B2 (en) * 2002-07-24 2009-11-12 Evatayhow Holdings Pty Ltd Theft deterrence security system
NL1022385C2 (en) * 2003-01-14 2004-07-15 Antonius Gerhardus Be Busscher Ruler for e.g. bricklaying, comprises data input device, processor and display for calculated marking positions and intervals
GB2419414A (en) * 2004-10-23 2006-04-26 Erik Juel Jacobsen Ruler
GB2445797A (en) * 2007-01-19 2008-07-23 Michael Cross Scale rule with digital display
CN103615944A (en) * 2013-11-19 2014-03-05 京东方科技集团股份有限公司 Ruler
WO2015074398A1 (en) * 2013-11-19 2015-05-28 京东方科技集团股份有限公司 Ruler
CN103615944B (en) * 2013-11-19 2016-04-13 京东方科技集团股份有限公司 A kind of ruler
US9612098B2 (en) 2013-11-19 2017-04-04 Boe Technology Group Co., Ltd. Ruler

Also Published As

Publication number Publication date
GB9402849D0 (en) 1994-04-06

Similar Documents

Publication Publication Date Title
EP0977012A3 (en) Hand-held compass with removable protective cover
US5050312A (en) Graphic calculator
GB2286677A (en) Digital scale rule
GB2312510A (en) Electronic ruler
EP1235197B1 (en) Display element and display device using display element
CH609199B (en) ELECTRONIC INSTRUMENT.
DE58908106D1 (en) Liquid crystal display for black and white display.
US4272107A (en) Tide time indicator
US4308449A (en) Tactical nuclear slide rule
US5033402A (en) Metric/English orometer
US20090165316A1 (en) Measurement Apparatus Having Display Device
US3314602A (en) Gas mileage calculator
CN2209322Y (en) Square calliper specially adapted for education and training
GB2340607A (en) Electronic ruler
FI78554C (en) NAVIGATIONSTEKNIK FOER ATT UTTRYCKA RIKTNINGAR.
CA1141351A (en) Calculating rule useful for making eyeglasses
Smyth et al. Manual of Surveying for India...
US4327940A (en) Gasoline pump display conversion kit
US1330839A (en) Apparatus for laying off or ascertaining ships&#39; courses
Knapp Ptolemy mapping Baetica
JPS6017697Y2 (en) Fuel level display device
JPH0623924Y2 (en) Surveyor with horizontal scale
GB2222280A (en) Electronic calculator with lens
JPH0378601A (en) Scale of variable reduction ratio
Minnaert The Measurement of Astrographic Plates

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)