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Vernier Caliper JS Model
written by Jiun Wei Chia
The Vernier Caliper JavaScript Model shows the principle of operation and the physical parts of a Vernier Caliper.

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.
  • 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)

1 supplemental document is available
2 source code documents are available
Subjects Levels Resource Types
General Physics
- Equipment
= Mechanical Equipment
- Measurement/Units
- Lower Undergraduate
- High School
- Instructional Material
= Interactive Simulation
= Model
Intended Users Formats Ratings
- Learners
- Educators
- application/javascript
- application/zip
- text/html
  • Currently 5.0/5

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Access Rights:
Free access
This material is released under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 license.
Rights Holder:
Jiun Wei Chia
Record Cloner:
Metadata instance created November 27, 2014 by Wolfgang Christian
Record Updated:
September 27, 2015 by Wolfgang Christian
Last Update
when Cataloged:
November 29, 2014
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.
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Record Link
AIP Format
J. Chia, Computer Program VERNIER CALIPER JS MODEL (2014), WWW Document, (
J. Chia, Computer Program VERNIER CALIPER JS MODEL (2014), <>.
APA Format
Chia, J. (2014). Vernier Caliper JS Model [Computer software]. Retrieved June 18, 2024, from
Chicago Format
Chia, Jiun Wei. "Vernier Caliper JS Model." (accessed 18 June 2024).
MLA Format
Chia, Jiun Wei. Vernier Caliper JS Model. Computer software. 2014. 18 June 2024 <>.
BibTeX Export Format
@misc{ Author = "Jiun Wei Chia", Title = {Vernier Caliper JS Model}, Month = {November}, Year = {2014} }
Refer Export Format

%A Jiun Wei Chia %T Vernier Caliper JS Model %D November 29, 2014 %U %O application/javascript

EndNote Export Format

%0 Computer Program %A Chia, Jiun Wei %D November 29, 2014 %T Vernier Caliper JS Model %8 November 29, 2014 %U

Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.

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 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.

Vernier Caliper JS 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 JS Model.

relation by Wolfgang Christian

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