# Micrometer Simulator

> Interactive physics simulation demonstrating micrometer measurement principles and parts. (iPhone/iPad app by loo kang wee.)

- Source: https://appshunter.io/ios/app/micrometer-simulator/id1164367611 (this page in markdown: same URL + `.md`)
- Developer: [loo kang wee](https://appshunter.io/developer/1231378973)
- Category: Education, Utilities
- Price: Free
- Rating: 2.75/5 from 4 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 60 MB
- Languages: English
- Released: 2016-10-13
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/micrometer-simulator/id1164367611/reviews.md

## What is Micrometer Simulator?

Pro Version thank you for your support.
https://itunes.apple.com/us/app/micrometer-simulator-pro/id1237535074?ls=1&mt=8
Free Version
https://itunes.apple.com/us/app/micrometer-simulator/id1164367611?ls=1&mt=8

About
An open source physics at Singapore simulation based on codes written by Fu-Kwun Hwang, Loo Kang WEE and Wolfgang Christian
more resources can be found here
http://iwant2study.org/ospsg/index.php/interactive-resources/physics/01-measurements

Introduction
Micrometers use the principle of a screw to amplify small distances that are too small to measure directly into large rotations of the screw that are big enough to read from a scale. The accuracy of a micrometer derives from the accuracy of the thread form that is at its heart. The basic operating principles of a micrometer are as follows: The amount of rotation of an accurately made screw can be directly and precisely correlated to a certain amount of axial movement (and vice-versa), through the constant known as the screw's lead. A screw's lead is the distance it moves forward axially with one complete turn (360°). (In most threads [that is, in all single-start threads], lead and pitch refer to essentially the same concept.) With an appropriate lead and major diameter of the screw, a given amount of axial movement will be amplified in the resulting circumferential movement. The micrometer has most functional physical parts of a real micrometer.
Frame ( Orange ) The C-shaped body that holds the anvil and barrel in constant relation to each other. It is thick because it needs to minimize expansion, and contraction, which would distort the measurement. The frame is heavy and consequently has a high thermal mass, to prevent substantial heating up by the holding hand/fingers. has a text 0.01 mm for smallest division of instrument has a text 2 rounds = 100 = 1.00 mm to allow association to actual micrometer
Anvil (Gray) The shiny part that the spindle moves toward, and that the sample rests against.
Sleeve / barrel / stock (Yellow) The stationary round part with the linear scale on it. Sometimes vernier markings.
Lock nut / lock-ring / thimble lock (Blue) The knurled part (or lever) that one can tighten to hold the spindle stationary, such as when momentarily holding a measurement.
Screw (not seen) The heart of the micrometer It is inside the barrel.
Spindle (Dark Green) The shiny cylindrical part that the thimble causes to move toward the anvil.
Thimble (Green) The part that one's thumb turns. Graduated markings.
Ratchet (Teal) (not shown ) Device on end of handle that limits applied pressure by slipping at a calibrated torque.
This applet has an object (Black) with slider on left top to control the y-motion of the object into the anvil and spindle (jaws), the graphics also allows drag action. with slider on left bottom to control the x-size of the object into the anvil and spindle (jaws). On the left bottom slider is the zero error control to allow of exploring with if the micrometer has either +0.15 mm (max) or -0.15 mm (min) zero error. The are check boxes: hint: guide lines and arrows to indicate the region of interest plus the accompanying rationale for the answer. answer: shows the measurement d = ??? mm lock: allows simulating of the lock function in real micrometer which disable changes to the position of the spindle then by the measurement is unchangeable. On the bottom there is a green slider to control the position of the spindle, drag on any part of the view also drags the spindle.

Interesting Fact
This simulation has object detection and hints targeted for O level Physics education, the zero error is also built in which other iOS app do not have.

Acknowledgement
My sincere gratitude for the tireless contributions of Francisco Esquembre, Fu-Kwun Hwang, Wolfgang Christian, Félix Jesús Garcia Clemente, Anne Cox, Andrew Duffy, Todd Timberlake and many more in the Open Source Physics community.

## Key features

- Interactive micrometer simulation
- Exploration of functional parts (frame, anvil, spindle, thimble)
- Adjustable object size and position for measurement practice
- Zero error control for learning
- Based on open-source physics codes
- Educational resource for understanding screw principles


## Frequently asked questions about Micrometer Simulator

### What is Micrometer Simulator?

Micrometer Simulator is an open-source physics simulation app that demonstrates the principles and functional parts of a micrometer. It allows users to interactively learn how micrometers are used to measure small distances.

### How does Micrometer Simulator work?

The app simulates the operation of a micrometer, explaining how the principle of a screw amplifies small distances into readable rotations on a scale. Users can adjust object dimensions and practice taking measurements.

### What are the main parts of a micrometer shown in the app?

The simulation highlights key functional parts including the frame, anvil, sleeve/barrel, lock nut, spindle, thimble, and ratchet. Each part's role in the measurement process is explained.

### Is Micrometer Simulator suitable for all ages?

The app has an age rating of 4+, making it suitable for younger learners and students. Its educational focus on physics principles is beneficial for a wide range of users.

### Can I use Micrometer Simulator offline?

The provided description does not specify offline capabilities. However, as a simulation-based educational tool, it is likely designed to function without a constant internet connection.

### How often is Micrometer Simulator updated?

The latest version, 0.1.14, was last updated on May 27, 2022. Further update frequency is not detailed in the provided information.

### What devices support Micrometer Simulator?

Micrometer Simulator is supported on iPhone, iPad, and iPod devices. It is designed for the iOS platform.

### What is the user rating for Micrometer Simulator?

Micrometer Simulator has a rating of 2.8 stars from 4 ratings. This indicates a mixed reception from its user base.

## Version history (last 1 release)

### 0.1.14 — 2022-05-27

updated iPad Pro (2nd Gen)
12.9" Display with screenshots

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