GB1112855A - Linear dimension measuring devices - Google Patents

Linear dimension measuring devices

Info

Publication number
GB1112855A
GB1112855A GB1896466A GB1896466A GB1112855A GB 1112855 A GB1112855 A GB 1112855A GB 1896466 A GB1896466 A GB 1896466A GB 1896466 A GB1896466 A GB 1896466A GB 1112855 A GB1112855 A GB 1112855A
Authority
GB
United Kingdom
Prior art keywords
magnet
magnetic
measuring devices
april
dimension measuring
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
GB1896466A
Inventor
Kenneth Frank Callis
Clifford Charles Barber
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB1896466A priority Critical patent/GB1112855A/en
Publication of GB1112855A publication Critical patent/GB1112855A/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
    • G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance
    • G01B7/105—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance 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

1, 112, 855. Magnetic thickness gauge. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 27, 1967 [April 29, 1966], No. 18964/66. Heading G1N. A gauge for measuring the thickness of a non- magnetic coating on magnetic material comprises a resiliently mounted magnet with means for measuring the attraction (between the magnet and the magnetic material). In Fig. 1 (not shown) the magnet is mounted in a liquid filled bellows and the attraction indicated by a liquid column. In Fig 2 (not shown) the magnet is mounted on a blade spring and its upper part rubs against a small roller carrying a pointer. The spring may be given a variable rate by suitable mounting e. g. as in Fig. 3 (not shown) to make the scale more linear.
GB1896466A 1966-04-29 1966-04-29 Linear dimension measuring devices Expired GB1112855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1896466A GB1112855A (en) 1966-04-29 1966-04-29 Linear dimension measuring devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1896466A GB1112855A (en) 1966-04-29 1966-04-29 Linear dimension measuring devices

Publications (1)

Publication Number Publication Date
GB1112855A true GB1112855A (en) 1968-05-08

Family

ID=10121465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1896466A Expired GB1112855A (en) 1966-04-29 1966-04-29 Linear dimension measuring devices

Country Status (1)

Country Link
GB (1) GB1112855A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180649A (en) * 1985-08-09 1987-04-01 Water Res Centre Detection and measurement of defects in ferrous articles
CN103234447A (en) * 2013-04-11 2013-08-07 蔡维 Electronic bark thickness gauge
CN114763985A (en) * 2021-01-14 2022-07-19 欣兴电子股份有限公司 Measuring probe device and method for electromagnetically measuring thickness of dielectric layer of circuit board

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180649A (en) * 1985-08-09 1987-04-01 Water Res Centre Detection and measurement of defects in ferrous articles
CN103234447A (en) * 2013-04-11 2013-08-07 蔡维 Electronic bark thickness gauge
CN114763985A (en) * 2021-01-14 2022-07-19 欣兴电子股份有限公司 Measuring probe device and method for electromagnetically measuring thickness of dielectric layer of circuit board

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