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

[ahmedelshfie]

This is a simulation for vernier cliper.
It can be used to measure outer diameter, inner diameter and depth with slider in different color.
Created by Prof Hwang
Modified by Ahmed
Original project vernier cliper (inch/mm mode, dial mode, measure inner/outer diameter and depth)

Embed a running copy of this simulation
<applet code='users.br.ahmed.users_ntnu_fkh_vernier_pkg.users_ntnu_fkh_vernierApplet.class' archive='http://www.phy.ntnu.edu.tw/ntnujava/ejsuser/37048/ejs_users_ntnu_fkh_vernier.jar' name='users_ntnu_fkh_vernier5928' id='users_ntnu_fkh_vernier5928' width='935' height='558' 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=5928' target='smfejs'>Run simulation</a>

Full screen applet or 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!

[ahmedelshfie]

Dial caliper

A further refinement to the vernier caliper is the dial caliper.

In this instrument, a small gear rack drives a pointer on a circular dial. Typically, the pointer rotates once every inch, tenth of an inch, or 1 millimeter, allowing for a direct reading without the need to read a vernier scale (although one still needs to add the basic inches or tens of millimeters value read from the slide of the caliper). The dial is usually arranged to be rotatable beneath the pointer, allowing for "differential" measurements (the measuring of the difference in size between two objects, or the setting of the dial using a master object and subsequently being able to read directly the plus-or-minus variance in size of subsequent objects relative to the master object).

The slide of a dial caliper can usually be locked at a setting using a small lever or screw; this allows simple go/no-go checks of part sizes.
http://en.wikipedia.org/wiki/Caliper