FR419274A - Tubular flask level with reflector system - Google Patents

Tubular flask level with reflector system

Info

Publication number
FR419274A
FR419274A FR419274DA FR419274A FR 419274 A FR419274 A FR 419274A FR 419274D A FR419274D A FR 419274DA FR 419274 A FR419274 A FR 419274A
Authority
FR
France
Prior art keywords
reflector system
flask level
tubular flask
tubular
level
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
Other languages
French (fr)
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.)
ZEISS CARL SOC
Original Assignee
ZEISS CARL SOC
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 ZEISS CARL SOC filed Critical ZEISS CARL SOC
Application granted granted Critical
Publication of FR419274A publication Critical patent/FR419274A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
    • G01C9/26—Details
    • G01C9/32—Means for facilitating the observation of the position of the bubble, e.g. illuminating means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Discharge Heating (AREA)
FR419274D 1909-08-05 1910-07-29 Tubular flask level with reflector system Expired FR419274A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE419274X 1933-07-07

Publications (1)

Publication Number Publication Date
FR419274A true FR419274A (en) 1910-12-30

Family

ID=6448962

Family Applications (1)

Application Number Title Priority Date Filing Date
FR419274D Expired FR419274A (en) 1909-08-05 1910-07-29 Tubular flask level with reflector system

Country Status (2)

Country Link
FR (1) FR419274A (en)
GB (1) GB419274A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767767C (en) * 1937-04-06 1953-05-18 Automatic Telephone & Elect Spark extinguishing arrangement for telecommunications, especially telephone systems
BE450313A (en) * 1942-04-25

Also Published As

Publication number Publication date
GB419274A (en) 1934-11-08

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