vernier cliper (inch/mm mode, dial mode, measure inner/outer diameter and depth)

[Fu-Kwun Hwang]

This is a simulation for vernier cliper.
It can be used to measure outer diameter, inner diameter and depth with slider in different color.
Blue slider: change width of the outer diameter.
Green slider: change the inner diameter
Yellow slider: change the depth of the object.

You can drag objects need to be measures (blue and yellow).
Drag the vertical slider at the right to change the scale.
Click show to show measured value.

Embed a running copy of this simulation
<applet code='users.ntnu.fkh.vernier_pkg.vernierApplet.class' archive='http://www.phy.ntnu.edu.tw/ntnujava/ejsuser/2/ejs_vernier.jar' name='vernier5283' id='vernier5283' width='861' height='522' mayscript=true><param name='draggable' value='true'></applet>
Embed a running copy link(show simulation in a popuped window)
<a href='http://www.phy.ntnu.edu.tw/ntnujava/msg.php?smfejs=5283' target='smfejs'>Run simulation</a>

Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License

• Please feel free to post your ideas about how to use the simulation for better teaching and learning.
• Post questions to be asked to help students to think, to explore.
• Upload worksheets as attached files to share with more users.

Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!

You are welcomed to check out other similar applets: .001 inch caliper (with dial option), Vernier Caliper with zero error options, Micrometer with zero error options, Another Cliper

*2011/02/22 bug fixed, add dragable

[lookang]

This is a great AppleT.
Like:
the most complete vernier caliper.
( metric n inch ) like a real one.
depth measurement

well done!

You can and should include  this into your list for checking out too.
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=684.0
Ejs open source Vernier calipers java applet with objects, help & 0-error logic

there are other good features to include.
Like:
your input field that you got me to understand how to make.
 

[bnettles@uu.edu]

I like the app but it is unclear what the units are for each scale. I shouldn't have to assume that the top scale is inches and the bottom scale is mm.  Please put some indication of the units on the diagram, because I tell my students to ALWAYS look for the units on the instrument.

[Fu-Kwun Hwang]

Thank you for your suggestion. I just added the unit into the simulation.

[lookang]

this applet here is simply awesome!
i like the depth measurement, if time permits will try to add it here as well
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=684.0

this is the best professional learning physics community website!!

Thanks Dr Hwang!

[dennisseda]

This applet is awesome!

I would just like to point out that the units on the scales seem to have been reversed.

[Fu-Kwun Hwang]

Would you please be more specific: please give me an example. Thank you!

[dennisseda]

I mean the inches scale seem to be marked in the mm, and the mm scale is marked in inches.

I also would like to embed these applets in my website. Are there any specific instructions for me to do so?

Thanks a lot for these!

[Fu-Kwun Hwang]

When the above simulation in default state: (not in dial mode).
The lower half is shown in mm, and the upper half is shown in inch.

When the dial mode check-box is checked:
 The value will be shown in inch when inch check-box is checked.

[RClark8270]

I just recently found this simulation and think it is very well done, and I hope to use it for training purposes at work. I have, however, found two errors that are beyond my ability to correct in order for it to be completely accurate.

First, any measurement taken above 1 inch in length only reports the correct values after the decimal place. Example: "d = 28.40 mm = 0.117 inch" which should read "d = 28.40 mm = 1.117 inch".

Second, when the simulation is set to Dial and measuring in metric the 0 line on the fixed scale is correctly positioned to be measured from the edge of the sliding jaw, but when you switch to inch mode the scale gets positioned the same as the default metric setting without the dial which makes the reading appear to be off by approximately 0.125 inches.

[RClark8270]

And for a free product, I agree it is much better than anything I could create.  I was just curious if anyone else out there could fix those two minor errors.  I can still use this for training purposes, as the dial portion isn't critical to me, and I can overlook the erroneous whole number portion of the reading as needed.

[Fu-Kwun Hwang]

 The above two bugs has been fixed now. Thank you very much!