FR1016137A - Precision Calculation Ruler - Google Patents

Precision Calculation Ruler

Info

Publication number
FR1016137A
FR1016137A FR1016137DA FR1016137A FR 1016137 A FR1016137 A FR 1016137A FR 1016137D A FR1016137D A FR 1016137DA FR 1016137 A FR1016137 A FR 1016137A
Authority
FR
France
Prior art keywords
precision calculation
calculation ruler
ruler
precision
calculation
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)
Inventor
Frederic Grelaud
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 FR1016137A publication Critical patent/FR1016137A/en
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
    • G06G1/10—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation
    • G06G1/12—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation logarithmic graduations, e.g. for multiplication

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
FR1016137D 1950-04-11 1950-04-11 Precision Calculation Ruler Expired FR1016137A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1016137T 1950-04-11

Publications (1)

Publication Number Publication Date
FR1016137A true FR1016137A (en) 1952-11-03

Family

ID=9573505

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1016137D Expired FR1016137A (en) 1950-04-11 1950-04-11 Precision Calculation Ruler

Country Status (1)

Country Link
FR (1) FR1016137A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049368A (en) * 1957-12-30 1962-08-14 Jansen Gerhart Clamp nut apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049368A (en) * 1957-12-30 1962-08-14 Jansen Gerhart Clamp nut apparatus

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