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) setting.
Vernier Caliper Demo JS Model
An alternative modification of the original Java model by Fy-Kwun Hwang. download 292kb .zip
Last Modified: September 27, 2015
Vernier Caliper Source Code
This source code zip archive contains an XML representation of the Vernier Caliper Model. Unzip this archive in your EJS workspace to compile and run this model using EjsS ver 5.1. Although EjsS is a Java program, it creates a stand alone JavaScript program from this source code. download 33kb .zip
Last Modified: November 27, 2014
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.
J. Chia, Computer Program VERNIER CALIPER JS MODEL (2014), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13376&DocID=3953).
Chia, J. (2014). Vernier Caliper JS Model [Computer software]. Retrieved October 7, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13376&DocID=3953
%0 Computer Program %A Chia, Jiun Wei %D November 29, 2014 %T Vernier Caliper JS Model %8 November 29, 2014 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=13376&DocID=3953
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.
2 ready-to-run examples are available
1 supplemental document is available
Record Link
Save to my folders
