JPS5639411A - Gradient rule - Google Patents

Gradient rule

Info

Publication number
JPS5639411A
JPS5639411A JP11484579A JP11484579A JPS5639411A JP S5639411 A JPS5639411 A JP S5639411A JP 11484579 A JP11484579 A JP 11484579A JP 11484579 A JP11484579 A JP 11484579A JP S5639411 A JPS5639411 A JP S5639411A
Authority
JP
Japan
Prior art keywords
graduated scale
gradient
vernier
rule
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.)
Pending
Application number
JP11484579A
Other languages
Japanese (ja)
Inventor
Toshio Morita
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP11484579A priority Critical patent/JPS5639411A/en
Publication of JPS5639411A publication Critical patent/JPS5639411A/en
Pending legal-status Critical Current

Links

Landscapes

  • Drawing Aids And Blackboards (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

PURPOSE: To provide high precision by providing a level bubble tube on a main rule and making circular the forehead portion of a graduated scale and of a vernier so that they may be folded together.
CONSTITUTION: For measurement from vertical to 5% gradient, vernier 2 is brought to contact to an object and guide pawl 7 attached to the graduated scale 3 is made to move horizontally along the upper surface of a main rule 1 until a bubble in the level 8 comes to stay in the center. At that time, a reading pointed by the bottom edge of the graduated scale 3 represents a sough gradient value. When a gradient from 5W50% is measured, a vernier 2 is contacted to an object, a graduated scale 3 is applied to guide strap 6 and a main rule (level) 1 is moved up and down until a bubble comes to stay in the center. At this moment, a reading pointed by the upper edge of the rule 1 provides a sought gradient value.
COPYRIGHT: (C)1981,JPO&Japio
JP11484579A 1979-09-06 1979-09-06 Gradient rule Pending JPS5639411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11484579A JPS5639411A (en) 1979-09-06 1979-09-06 Gradient rule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11484579A JPS5639411A (en) 1979-09-06 1979-09-06 Gradient rule

Publications (1)

Publication Number Publication Date
JPS5639411A true JPS5639411A (en) 1981-04-15

Family

ID=14648138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11484579A Pending JPS5639411A (en) 1979-09-06 1979-09-06 Gradient rule

Country Status (1)

Country Link
JP (1) JPS5639411A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS593333A (en) * 1982-06-30 1984-01-10 Yamamoto Suiatsu Kogyosho:Kk Hydraulic test method of pipe
CN102126385A (en) * 2011-04-29 2011-07-20 浙江博大测量工具有限公司 Right angle ruler
CN108613668A (en) * 2018-06-14 2018-10-02 上海二十冶建设有限公司 A kind of tool and its application method for measuring wall column verticality

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS593333A (en) * 1982-06-30 1984-01-10 Yamamoto Suiatsu Kogyosho:Kk Hydraulic test method of pipe
JPH0230452B2 (en) * 1982-06-30 1990-07-06 Yamamoto Suiatsu Kogyosho Kk
CN102126385A (en) * 2011-04-29 2011-07-20 浙江博大测量工具有限公司 Right angle ruler
CN108613668A (en) * 2018-06-14 2018-10-02 上海二十冶建设有限公司 A kind of tool and its application method for measuring wall column verticality

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