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Vernier Caliper Model
written by Fu-Kwun Hwang
edited by Loo Kang Wee and Wolfgang Christian
This interactive model shows the principle of operation and the physical parts of a Vernier Caliper, a device used in length measurements to gain accuracy compared to a simple ruler. In this simulation, use the blue slider to move the internal jaws and measure the width of an object; use the green slider to move external jaws to measure the object's internal diameter. The model was developed to help students gain proficiency in use of the Vernier Caliper outside the lab, and to promote understanding of uncertainty and error in measurement.  

This model was developed using Easy Java Simulations (EJS) a modeling tool that allows users without formal programming experience to generate computer models and simulations. Teachers may choose to simply run the simulation, or may modify/customize the model by installing the EJS Modeling and Authoring Tool. SEE RELATED MATERIALS for a link to the free authoring tool.

Please note that this resource requires at least version 1.5 of Java (JRE).
1 source code document is available
Subjects Levels Resource Types
General Physics
- Equipment
= Mechanical Equipment
- Measurement/Units
- High School
- Lower Undergraduate
- Middle School
- Upper Undergraduate
- Instructional Material
= Interactive Simulation
Appropriate Courses Categories Ratings
- Physical Science
- Physics First
- Conceptual Physics
- Algebra-based Physics
- AP Physics
- Activity
- New teachers
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Intended Users:
Access Rights:
Free access
This material is released under a GNU General Public License Version 3 license.
Rights Holder:
Fu-Kwun Hwang
caliper simulation, measurement
Record Cloner:
Metadata instance created December 12, 2009 by Wolfgang Christian
Record Updated:
June 15, 2020 by Bruce Mason
Last Update
when Cataloged:
September 10, 2009
Other Collections:

AAAS Benchmark Alignments (2008 Version)

11. Common Themes

11B. Models
  • 6-8: 11B/M6. A model can sometimes be used to get ideas about how the thing being modeled actually works, but there is no guarantee that these ideas are correct if they are based on the model alone.

12. Habits of Mind

12B. Computation and Estimation
  • 6-8: 12B/M8. Decide what degree of precision is adequate and round off the result of calculator operations to enough significant figures to reasonably reflect those of the inputs.
12C. Manipulation and Observation
  • 6-8: 12C/M3. Make accurate measurements of length, volume, weight, elapsed time, rates, and temperature by using appropriate devices.
  • 6-8: 12C/M5. Analyze simple mechanical devices and describe what the various parts are for; estimate what the effect of making a change in one part of a device would have on the device as a whole.
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
F. Hwang, Computer Program VERNIER CALIPER MODEL (2009), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9707&DocID=1445).
F. Hwang, Computer Program VERNIER CALIPER MODEL (2009), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9707&DocID=1445>.
APA Format
Hwang, F. (2009). Vernier Caliper Model [Computer software]. Retrieved June 17, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9707&DocID=1445
Chicago Format
Hwang, Fu-Kwun. "Vernier Caliper Model." https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9707&DocID=1445 (accessed 17 June 2024).
MLA Format
Hwang, Fu-Kwun. Vernier Caliper Model. Computer software. 2009. Java (JRE) 1.5. 17 June 2024 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9707&DocID=1445>.
BibTeX Export Format
@misc{ Author = "Fu-Kwun Hwang", Title = {Vernier Caliper Model}, Month = {September}, Year = {2009} }
Refer Export Format

%A Fu-Kwun Hwang %T Vernier Caliper Model %E Loo Kang Wee %E Wolfgang Christian, (eds) %D September 10, 2009 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9707&DocID=1445 %O application/java

EndNote Export Format

%0 Computer Program %A Hwang, Fu-Kwun %D September 10, 2009 %T Vernier Caliper Model %E Wee, Loo Kang %E Christian, Wolfgang %8 September 10, 2009 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9707&DocID=1445

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Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Style.org: Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

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Vernier Caliper Model:

Is Based On Easy Java Simulations Modeling and Authoring Tool

The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Vernier Caliper Model.

relation by Wolfgang Christian

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