FR1020031A - Grille à calcul cylindrique par échelles logarithmiques fractionnées - Google Patents

Grille à calcul cylindrique par échelles logarithmiques fractionnées

Info

Publication number
FR1020031A
FR1020031A FR1020031DA FR1020031A FR 1020031 A FR1020031 A FR 1020031A FR 1020031D A FR1020031D A FR 1020031DA FR 1020031 A FR1020031 A FR 1020031A
Authority
FR
France
Prior art keywords
worksheet
fractional
cylindrical
logarithmic scales
logarithmic
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
English (en)
Inventor
Jean Jaubert
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 filed Critical
Application granted granted Critical
Publication of FR1020031A publication Critical patent/FR1020031A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
    • G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction
    • G06G1/08—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction with circular or helical scales
    • G06G1/085—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction with circular or helical scales borne by a cylinder

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
FR1020031D 1950-06-12 1950-06-12 Grille à calcul cylindrique par échelles logarithmiques fractionnées Expired FR1020031A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1020031T 1950-06-12

Publications (1)

Publication Number Publication Date
FR1020031A true FR1020031A (fr) 1953-01-30

Family

ID=9576060

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1020031D Expired FR1020031A (fr) 1950-06-12 1950-06-12 Grille à calcul cylindrique par échelles logarithmiques fractionnées

Country Status (1)

Country Link
FR (1) FR1020031A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688980A (en) * 1969-12-01 1972-09-05 Bernard Progin Calculating rule

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688980A (en) * 1969-12-01 1972-09-05 Bernard Progin Calculating rule

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