GB563567A - Improvements in or relating to sensitive measuring instruments - Google Patents

Improvements in or relating to sensitive measuring instruments

Info

Publication number
GB563567A
GB563567A GB72243A GB72243A GB563567A GB 563567 A GB563567 A GB 563567A GB 72243 A GB72243 A GB 72243A GB 72243 A GB72243 A GB 72243A GB 563567 A GB563567 A GB 563567A
Authority
GB
United Kingdom
Prior art keywords
scale
mirror
light
screen
lens
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
GB72243A
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.)
FOSTER INSTR Co Ltd
LESLIE GEORGE DAY
High Duty Alloys Ltd
Original Assignee
FOSTER INSTR Co Ltd
LESLIE GEORGE DAY
High Duty Alloys Ltd
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 FOSTER INSTR Co Ltd, LESLIE GEORGE DAY, High Duty Alloys Ltd filed Critical FOSTER INSTR Co Ltd
Priority to GB72243A priority Critical patent/GB563567A/en
Publication of GB563567A publication Critical patent/GB563567A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D7/00—Indicating measured values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D7/00—Indicating measured values
    • G01D7/02—Indicating value of two or more variables simultaneously
    • G01D7/04—Indicating value of two or more variables simultaneously using a separate indicating element for each variable
    • G01D7/06—Luminous indications projected on a common screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Escalators And Moving Walkways (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)

Abstract

563,567. Indicating devices. DAY, L. G., HIGH DUTY ALLOYS, Ltd., and FOSTER INSTRUMENT CO., Ltd. Jan. 14, 1943, No. 722. [Class 106 (iv)] A measuring instrument, such as an electric pyrometer, has a light-weight index member 4 which passes over a relatively fixed scale 2,- and associated optical means whereby a magnified image of the index member together with only the adjacent part of the scale may be cast on to a screen 9. A knob 10 is adjusted to position a gear sector 18 so that a light source 5 sends a beam through a lens system 6 past the index 4 and the adjacent part of the scale. Through the gears 11, 12, 15, 14 a mirror 7 is turned through half the angle of the sector 18, so as always to reflect, the beam of light through a'lens 8 to a plain mirror 19, a convex mirror 20, and so to a'screen 9 formed of two layers of the material known under the Registered Trade Mark of Celastoid, between two sheets of glass. The magnification may be produced alternatively by a compound projection lens of the telephoto type.
GB72243A 1943-01-14 1943-01-14 Improvements in or relating to sensitive measuring instruments Expired GB563567A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB72243A GB563567A (en) 1943-01-14 1943-01-14 Improvements in or relating to sensitive measuring instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB72243A GB563567A (en) 1943-01-14 1943-01-14 Improvements in or relating to sensitive measuring instruments

Publications (1)

Publication Number Publication Date
GB563567A true GB563567A (en) 1944-08-21

Family

ID=9709376

Family Applications (1)

Application Number Title Priority Date Filing Date
GB72243A Expired GB563567A (en) 1943-01-14 1943-01-14 Improvements in or relating to sensitive measuring instruments

Country Status (1)

Country Link
GB (1) GB563567A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149178B (en) * 1959-11-14 1963-05-22 Rodenstock Optik G Light pointer arrangement for display and measuring devices with rotating mirror
DE1298725B (en) * 1955-10-18 1969-07-03 Siemens Ag Adjusting device for a light pointer instrument
US3600077A (en) * 1968-08-09 1971-08-17 Weston Instruments Inc Electrical indicating instruments

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1298725B (en) * 1955-10-18 1969-07-03 Siemens Ag Adjusting device for a light pointer instrument
DE1149178B (en) * 1959-11-14 1963-05-22 Rodenstock Optik G Light pointer arrangement for display and measuring devices with rotating mirror
US3600077A (en) * 1968-08-09 1971-08-17 Weston Instruments Inc Electrical indicating instruments

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