GB819533A - Electronic thickness gauge - Google Patents

Electronic thickness gauge

Info

Publication number
GB819533A
GB819533A GB2433556A GB2433556A GB819533A GB 819533 A GB819533 A GB 819533A GB 2433556 A GB2433556 A GB 2433556A GB 2433556 A GB2433556 A GB 2433556A GB 819533 A GB819533 A GB 819533A
Authority
GB
United Kingdom
Prior art keywords
sheet
aug
probe
thickness
insulating coating
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.)
Expired
Application number
GB2433556A
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 GB2433556A priority Critical patent/GB819533A/en
Publication of GB819533A publication Critical patent/GB819533A/en
Expired 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
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G01B7/08—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means
    • G01B7/085—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means for measuring thickness of coating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

819,533. Electric tests. URMENYI, L. Aug. 7, 1957 [Aug. 8, 1956], No. 24335/56. Class 37. The thickness of an insulating coating on a conductng base is measured by a capacitance method, the probe comprising a sheet of flexible metal fixed to a block of soft elastic material, so that it may follow a curved surface closely; as shown, the flexible metal probe 25 is backed by a piece of rubber 24 and a hollowed-out insulator 23. The metal sheet 25 may be protected by a thin pliable sheet of insulating material. It is shown as applied to a curved metal workpiece 27 having an insulating coating 28. Fig. 1 (not shown) is a suitable capacitance bridge circuit, in which the required thickness is read as a galvanometer deflection, the galvanometer being calibrated by two test pieces whose thickness differs by a known amount (e.g. 1/500 in.).
GB2433556A 1956-08-08 1956-08-08 Electronic thickness gauge Expired GB819533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2433556A GB819533A (en) 1956-08-08 1956-08-08 Electronic thickness gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2433556A GB819533A (en) 1956-08-08 1956-08-08 Electronic thickness gauge

Publications (1)

Publication Number Publication Date
GB819533A true GB819533A (en) 1959-09-02

Family

ID=10210095

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2433556A Expired GB819533A (en) 1956-08-08 1956-08-08 Electronic thickness gauge

Country Status (1)

Country Link
GB (1) GB819533A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257591A (en) * 1962-09-12 1966-06-21 Gen Electric Plug type probe for capacitively measuring surface flatness surrounding circular hole in metal plate
FR2365102A1 (en) * 1976-09-15 1978-04-14 Westinghouse Electric Corp DEVICE FOR DETECTION OF THE CONDITION OF A CONDUCTIVE SURFACE
WO1991018257A1 (en) * 1990-05-11 1991-11-28 E.I. Du Pont De Nemours And Company Contact measuring device for determining the dry film thickness of a paint on a plastic substrate
AU644554B2 (en) * 1990-05-11 1993-12-09 E.I. Du Pont De Nemours And Company Contact measuring device for determining the dry film thickness of a paint on a conductive primer adhered to a plastic substrate
DE10236904A1 (en) * 2002-08-12 2004-02-26 Fogra Forschungsgesellschaft Druck Ev Varnish layer thickness measurement and control device for measuring the thickness of a varnish layer on a roller of a varnish application machine for use in the printing industry, wherein two measurement units are employed

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257591A (en) * 1962-09-12 1966-06-21 Gen Electric Plug type probe for capacitively measuring surface flatness surrounding circular hole in metal plate
FR2365102A1 (en) * 1976-09-15 1978-04-14 Westinghouse Electric Corp DEVICE FOR DETECTION OF THE CONDITION OF A CONDUCTIVE SURFACE
WO1991018257A1 (en) * 1990-05-11 1991-11-28 E.I. Du Pont De Nemours And Company Contact measuring device for determining the dry film thickness of a paint on a plastic substrate
AU644554B2 (en) * 1990-05-11 1993-12-09 E.I. Du Pont De Nemours And Company Contact measuring device for determining the dry film thickness of a paint on a conductive primer adhered to a plastic substrate
DE10236904A1 (en) * 2002-08-12 2004-02-26 Fogra Forschungsgesellschaft Druck Ev Varnish layer thickness measurement and control device for measuring the thickness of a varnish layer on a roller of a varnish application machine for use in the printing industry, wherein two measurement units are employed

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