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Measurement Laboratory
Metrology is an important skill to master as a Manufacturing Engineer. Precise measurements help us create our products and materials perfectly. Proper measurement skills also allow us to follow standards and employ accurate dimension reading. A copy of the online book can be accessed through the link below.
https://www.globalspec.com/reference/63604/203279/chapter-1-introduction
Dimensional Measurements
Dimensional measurement is an important part of metrology. Among the topics under this topic involves the differentiation of accuracy and precision. Measurement reading may be accurate but not precise while other measurements may be precise but not accurate. This video may help us understand the difference between accuracy and precision and understand their relevance in the field of metrology.
Measurement devices are also constrained by resolution and sensitivity. These two are often interconnected but in reality, they are entirely different. Click on this video link to learn more about resolution and sensitivity.
To attain accurate and precise measurement reading you need to have a reliable and stable measuring instrument. This article will explain more about reliability and stability.
Aside from the topics mentioned above, it is also important to have an understanding of how different measurement devices work.
The steel rule is one of the measurement devices used in metrology. This video will present an overview of the steel rule.
Caliper gauges also help attain measurement readings. To learn more about caliper gauges, you may refer to this article.
Micrometers also help us in dimensional measurement. This article will briefly explain all about micrometers.
The following article provides a brief overview of what you would expect in this course.
Measurement using a steel rule
You can measure accurately using a steel rule. This video demonstrates how to use the ruler accurately.
Reading a ruler is an important aspect of metrology. Knowing the basics on how to understand the measurement reading of a ruler is an essential skill for all manufacturing engineers. This video will explain how to properly read the dimension reading from a ruler.
This document gives you an overview all about steel rulers.
Measurement using inside and outside caliper
Aside from using rulers, manufacturing engineers can also use calipers for measurement dimensions. This article will help you understand what are calipers.
There are also different types of calipers available in the market. This article explains some of their differences and provides pictures for reference.
The spring-joint caliper is the basic type of caliper. There are typically an inside and an outside caliper used for the inside and outside diameters of a cylinder. This video will explain how to use this type of caliper.
Measurement using vernier caliper
The vernier caliper is a more precise type of caliper used for dimensional measurements. To learn more about the vernier caliper, please refer to this link.
A vernier caliper can be used for inside and outside diameter measurements. To discover more about how to use this type of measurement device you may watch this video.
Reading a vernier caliper might be confusing because of the introduction of a vernier scale. Fret not, you can learn to read a caliper by watching this video.
Measurement using outside micrometer
Micrometers are also considered as one of the common measurement tools in metrology. The video below will introduce you to the capabilities of a micrometer.
Reading an outside micrometer might be confusing on the first try, that is why these videos will help you gain this skill.
How to read a metric micrometer
How to read inches micrometer
Micrometer calibration
Micrometers should be calibrated to ensure that you have an accurate and precise measurement. This link will explain how to use and calibrate a micrometer.
Here are other links for micrometer calibration that may be a useful metrology skill.
Measurement of a plain ring gauge
A plain ring gauge is a standardized measurement tool used to assess whether a hole has a specific diameter. This article will further explain more about these ring gauges.
It is also essential to understand the use of slip gauges. This video will demonstrate what slip gauges are and how to use them.
Limit plug gauges are essential to assess whether a ring gauge is acceptable or not. This video will discuss more about the limit plug gauges.
Checking a sine bar
This video link will walk you through on how to use a sine bar.
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