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Measurement of length and time

Description

Play with the Vernier Caliper Model. Test what you've learned by trying the input field.

Vernier calipers can measure internal dimensions (using the uppermost jaws in the picture at right), external dimensions using the pictured lower jaws, and depending on the manufacturer, depth measurements by the use of a probe that is attached to the movable head and slides along the centre of the body. This probe is slender and can get into deep grooves that may prove difficult for other measuring tools.
The vernier scales can be in metric measurements on the upper and lower part of the scale.
Vernier calipers commonly used in industry provide a precision to a hundredth of a millimetre (10 micrometres).
A more precise instrument used for the same purpose is the micrometer

Parts of a vernier caliper:

Outside jaws: used to measure external diameter or width of an object (Blue)

Inside jaws: used to measure internal diameter of an object
Depth probe: used to measure depths of an object or a hole ( not shown in this model)

Main scale: gives measurements in mm.
Vernier gives measurements up to one decimal places in mm
Retainer: used to block movable part to allow the easy transferring a measurement ( not shown in this model)

The Vernier calipers model has

an object (Blue) for the internal jaws to measure width of an object with slider to control width of the object and simple drag action to control position of object.
an object (Green) for external jaws to measure internal diameter of a cylinder for example with slider to control dimensions of the cylinder.
a slider for zero error slider
checkbox for hint to scaffold the learners attention and point of focus
checkbox for answer to show the meaning of reading on the main scale and the vernier scale with zero error calculations if any.
drop down menu of the various common vernier scales for sense making and additional testing out by learners their ideas of how vernier works.
fine <> control buttons for learners to manipulate the model with single incremental precision
slider control for fast changes in the vernier measurement
reset button to bring simulaton back to original (default) setting.

Sample Learning Goals

(g) describe how to measure a variety of lengths with appropriate accuracy by means of tapes, rules, micrometers and calipers, using a vernier scale as necessary.

Research

arXiv:1408.3803 [pdf]
Vernier caliper and micrometer computer models using Easy Java Simulation and its pedagogical design feature-ideas to augment learning with real instruments
Loo Kang Wee, Hwee Tiang Ning
Comments: 8 pages, 8 figures, Physics Education journal
Subjects: Physics Education (physics.ed-ph); Instrumentation and Detectors (physics.ins-det)
https://youtu.be/jHoA5M-_1R4

Video

https://youtu.be/zz4Fha5sISo

https://youtu.be/qXtE07tbK8s

Version:

Blackbody Radiation

Vernier Caliper Simulation

Vernier calipers

Vernier calipers can measure internal dimensions (using the uppermost jaws in the picture at right), external dimensions using the pictured lower jaws, and depending on the manufacturer, depth measurements by the use of a probe that is attached to the movable head and slides along the centre of the body. This probe is slender and can get into deep grooves that may prove difficult for other measuring tools.

The vernier scales can be in metric measurements on the upper and lower part of the scale.

Vernier calipers commonly used in industry provide a precision to a hundredth of a millimetre (10 micrometres).

A more precise instrument used for the same purpose is the micrometer

.Parts of a vernier caliper:

Outside jaws: used to measure external diameter or width of an object (Blue)
Inside jaws: used to measure internal diameter of an object
Depth probe: used to measure depths of an object or a hole ( not shown in this model)
Main scale: gives measurements in mm.
Vernier gives measurements up to one decimal places in mm
Retainer: used to block movable part to allow the easy transferring a measurement ( not shown in this model)

The Vernier calipers model has

an object (Blue) for the internal jaws to measure width of an object with slider to control width of the object and simple drag action to control position of object.
an object (Green) for external jaws to measure internal diameter of a cylinder for example with slider to control dimensions of the cylinder.
a slider for zero error slider
checkbox for hint to scaffold the learners attention and point of focus
checkbox for answer to show the meaning of reading on the main scale and the vernier scale with zero error calculations if any.
drop down menu of the various common vernier scales for sense making and additional testing out by learners their ideas of how vernier works.
fine <> control buttons for learners to manipulate the model with single incremental precision
slider control for fast changes in the vernier measurement
reset button to bring simulaton back to original (default) setting.

Credits:

The Vernier calipers model was created by created by Fu-Kwun Hwang, customized by Loo Kang Wee and Wolfgang Christian using the Easy Java Simulations (EJS) version 4.2 authoring and modeling tool. An applet version of this model is available on the NTNU website < http://www.phy.ntnu.edu.tw/ntnujava/ >.

You can examine and modify this compiled EJS model if you run the model (double click on the model's jar file), right-click within a plot, and select "Open EJS Model" from the pop-up menu. You must, of course, have EJS installed on your computer. Information about EJS is available at: <http://www.um.es/fem/Ejs/> and in the OSP comPADRE collection <http://www.compadre.org/OSP/>.

Translations

Code	Language		Translator	Run

Credits

Fu-Kwun Hwang; lookang

20231003 Update! WEBEJS editor https://macmath.inf.um.es/editor?name=lookang&url=https://localhost/editor?name=lookang&url=https://iwant2study.org/lookangejss/01_measurement/ejss_model_AAPTVernierCaliper.zip

Check out Vernier Caliper tape 150mm measures in mm and inch Digital Ruler LCD battery included. Get it on Shopee now! https://shope.ee/2flTsKNmFN?share_channel_code=1

Learnng Objectives https://sites.google.com/moe.edu.sg/a-level-physics-tlg/foundations-of-physics

Errors, uncertainties, precision and accuracy through practical work

Learning Outcomes:

H2: 1(f), 1(g)

Curriculum Emphasis:

Ways of Thinking and Doing

Can uncertainty be reduced or even eliminated? How do measurement uncertainties propagate to derived quantities?

Identify and discuss how errors and uncertainties arise in specific measurements and experiments that students carry out, and discuss ways to reduce the errors and uncertainties. It is also possible to discuss the concepts of precision and accuracy using the data collected.

This is a way of building on existing practical work throughout the year to reinforce students' understanding of error and uncertainty through experiential learning.

Resources:

UNC - Introduction to Measurements & Error Analysis

Apps

Cover art

Pro
https://play.google.com/store/apps/details?id=com.ionicframework.vernierpro698620
Free
https://play.google.com/store/apps/details?id=com.ionicframework.vernierapp777926

Free

https://itunes.apple.com/us/app/vernier-calipers-simulator/id1163657388?ls=1&mt=8

Pro

https://itunes.apple.com/us/app/vernier-calipers-simulator-pro/id1244019319?ls=1&mt=8

How to Use

General Description

This JavaScript App simulates the Vernier Caliper. The simulation shows the instrument setup with a rectangular object .

The Vernier calipers model has an object (Blue) for the internal jaws to measure width of an object with slider to control width of the object and simple drag action to control position of object.

An object (Green) for external jaws to measure internal diameter of a cylinder for example with slider to control dimensions of the cylinder.

Visual Elements

Outside jaws: used to measure external diameter or width of an object (Blue)
Inside jaws: used to measure internal diameter of an object
Depth probe: used to measure depths of an object or a hole ( not shown in this model) .
Main scale: gives measurements in mm.
Vernier gives measurements up to one decimal places in mm
Retainer: used to block movable part to allow the easy transferring a measurement ( not shown in this model)
fine control buttons for learners to manipulate the model with single incremental precision control
Vernier gives measurements up to one decimal places in mm

Controls

ComboBox 1: Sets the type of caliper scales.
ComboBox 2: Show and hide hints, answers, common objects etc
ComboBox 3: Sets the zero error
play button to run the caliper to move automatically.
reset button to bring simulaton back to original (default) setting.
?= click to toggle between combobox or input field.
combobox/inputfield to ease selecting answers like 0.00 and key in numbers.
cm/mm text click to toggle between the 2 units, centimeter and millimeter

iCTLT2016 ePosterGuide Example

{/source}

Video iCTLT2016 Sample of ePoster by lookang lawrence wee

Worksheet

Video

https://youtu.be/VfFVjS2jc00 by Evan

https://youtu.be/WGZ7aXNf0pQ by Nawal Nayfeh

https://www.youtube.com/watch?v=JsBHciYPMJI

https://youtu.be/zz4Fha5sISo

https://youtu.be/qXtE07tbK8s

GIF

https://3.bp.blogspot.com/-p0SadXZAkzo/V1Yg5C07E6I/AAAAAAAA37g/CFiB0StCka0jlQHUIFW-OsvKwJRAO12YgCLcB/s640/vernier.gif Animation of vernier caliper

Version:

http://weelookang.blogspot.com/2018/09/vernier-caliper-javascript-html5-applet.html added external, internal and depth measurements by Fu-Kwun Hwang and lookang
http://weelookang.blogspot.sg/2015/07/ejss-vernier-caliper-model.html by Fu-Kwun Hwang and lookang JavaScript version blogpost
http://weelookang.blogspot.sg/2010/06/ejs-open-source-vernier-calipers-java.html by Fu-Kwun Hwang and lookang Java version blogpost
http://iwant2study.org/lookangejss/01_measurement/ejs/ejs_model_AAPTVernierCaliper.jar by Fu-Kwun Hwang and lookang OSP@SG digital library copy
http://www.opensourcephysics.org/items/detail.cfm?ID=9707 by Fu-Kwun Hwang and lookang first Open Source Physics catalog item
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1408.0 by Fu-Kwun Hwang with different measure jaws options
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=684.0 by Fu-Kwun Hwang and lookang remix Java version
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=567.0 by Fu-Kwun Hwang with zero errors

Other Resources

http://physci.kennesaw.edu/html5/tm-vernier.html by Taha Mzoughi
https://3dwarehouse.sketchup.com/model.html?id=8d9c6f18404cb75dc918062ff9c5ac49
https://www.geogebra.org/m/jybrnwgp by Seng kwang

Developer notes

Simulation completed on 4 Nov:

1. Vernier Caliper

- enlarged the dragme objects on the bottom scale (yellow) and bottom object (blue) to help make the dragging easier on smaller mobile screen

- added "mm" on top scale

- added checkAndroid for fullscreen

- removed bug for initial tail values (yellow) when measuring depth. (so that yellow tail won't "pierce" through the pink container.

end faq

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Details: Parent Category: 01 Foundations of Physics; Category: 01 Measurements; Published: 25 September 2016; Created: 13 August 2015; Last Updated: 23 October 2024; Hits: 170906

Breadcrumbs

Vernier Caliper App Full screen version JavaScript HTML5 Applet Simulation Model

About

Topics

Description

Parts of a vernier caliper:

Sample Learning Goals

Research

Video

Version:

Vernier calipers

Translations

Credits

Learnng Objectives https://sites.google.com/moe.edu.sg/a-level-physics-tlg/foundations-of-physics

Errors, uncertainties, precision and accuracy through practical work

Apps

How to Use

General Description

Visual Elements

Controls

iCTLT2016 ePosterGuide Example

Worksheet

Video

Version:

Other Resources

Developer notes

end faq