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CN201155957Y - 曲线长度尺 - Google Patents

曲线长度尺 Download PDF

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Publication number
CN201155957Y
CN201155957Y CNU2007201850583U CN200720185058U CN201155957Y CN 201155957 Y CN201155957 Y CN 201155957Y CN U2007201850583 U CNU2007201850583 U CN U2007201850583U CN 200720185058 U CN200720185058 U CN 200720185058U CN 201155957 Y CN201155957 Y CN 201155957Y
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curve length
utility
curve
model
ruler
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Expired - Fee Related
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CNU2007201850583U
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English (en)
Inventor
邵轶邦
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Individual
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Individual
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Abstract

曲线长度尺是属于教学教具。本实用新型就是提供一种可方便准确地测量出曲线长度的曲线长度尺,使教学、使用时直观易懂。本实用新型包括托架,其结构要点测绳设置在托架两端的滚轮上,托架的上方设置有刻度尺。

Description

曲线长度尺
技术领域:
本实用新型是属于教学教具。
背景技术:
目前,学生在学习中,尤其是地理与实践活动中测量曲线(主要是测量地图上两地距离)长度,主要是目测与绳测;这两种方法误差都较大,学生们想要测出准确长度十分困难。
实用新型内容:
本实用新型就是针对上述问题,提供一种可方便准确地测量出曲线长度的曲线长度尺,使教学、使用时直观易懂。
为实现上述目的,本实用新型采用如下技术方案,本实用新型包括托架,其结构要点测绳设置在托架两端的滚轮上,托架的上方设置有刻度尺。
本实用新型的有益效果:
本实用新型的曲线长度尺使用时避免了手触摸测绳影响测量的准确性;在滚轮和测绳上标出测量指示线,从指示线处测起,提高了测量的准确性;使曲线测量轻松应对,直观、易懂。
附图说明:
图1是本实用新型的结构示意图;
图2是图1的A-A剖视图;
图3是图1的B-B剖视图。
具体实施方式:
本实用新型包括托架2,测绳1设置在托架2两端的滚轮4上,托架2的上方设置有刻度尺3。
下面结合附图说明本实用新型的一次动作过程:
当实际测量时,滚轮4上设定的测量指示线对准被测曲线的起点,测绳1上设定的测量指示线对准刻度尺的“0”刻度线;转动滚轮4,沿着被测曲线的线路到曲线的终点;根据滚轮4滚动的距离与测绳1滑动的距离相等的原理,测绳1的红色指示线在刻度尺3上就指示出了被测曲线的长度。

Claims (1)

1、曲线长度尺,包括托架(2),其特征在于测绳(1)设置在托架(2)两端的滚轮(4)上,托架(2)的上方设置有刻度尺(3)。
CNU2007201850583U 2007-12-21 2007-12-21 曲线长度尺 Expired - Fee Related CN201155957Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201850583U CN201155957Y (zh) 2007-12-21 2007-12-21 曲线长度尺

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201850583U CN201155957Y (zh) 2007-12-21 2007-12-21 曲线长度尺

Publications (1)

Publication Number Publication Date
CN201155957Y true CN201155957Y (zh) 2008-11-26

Family

ID=40103739

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201850583U Expired - Fee Related CN201155957Y (zh) 2007-12-21 2007-12-21 曲线长度尺

Country Status (1)

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CN (1) CN201155957Y (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104567595A (zh) * 2014-07-08 2015-04-29 周维保 工程测量仪

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104567595A (zh) * 2014-07-08 2015-04-29 周维保 工程测量仪

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20081126

Termination date: 20100121