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Machinist Rulers

Machinists often have to measure their work before they start cutting. They use rulers to ensure that everything goes as planned. This article looks at the best tools available to help you make sure that your measurements are accurate.

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Buyer's Guide

How to choose the
best machinist rulers

What is the Purpose Of A Machinist Rulers?

Machinists' rulers are essential tools for measuring and marking parts during manufacturing processes. There are many different types of machinist's rulers available today. Some are designed specifically for specific industries while others are general purpose devices. For example, there are mechanical gauges which measure length, width, height, diameter, etc., and electronic digital gauges which measure dimensions using sensors and display results digitally.

How Do Machinist's Rulers Help Me?

Rulers are useful for several reasons. First, they allow you to mark precise measurements on objects. Second, they enable you to determine whether two pieces of material match exactly. Third, they can be used to check the accuracy of cutting machines. Fourth, they can be used to ensure that parts are cut to exact specifications. Finally, they can be used to verify the size of holes drilled into materials.

Types of Machinist's Rulers Available Today

There are three main categories of machinist's rulers: Mechanical, Electronic Digital, and Optical. Each type has its own advantages and disadvantages. Here we discuss each category briefly.

Mechanical Rulers

These rulers consist of metal strips attached to a base plate. The strip is marked with numbers corresponding to the distance between points along the ruler. To use these rulers, you must slide the ruler across the object being measured. Then read the number on the ruler to see where the measurement falls within the range specified by the manufacturer.

Electronic Digital Rulers

This type of ruler consists of a plastic housing containing a microprocessor chip. Inside the housing is a sensor that measures distances. The result is displayed on a liquid crystal display (LCD) screen. The LCD screen shows the distance between the start point and end point of the ruler. The user slides the ruler across the part being measured. As he does so, the distance shown on the LCD changes accordingly.

Optical Rulers

The optical ruler uses light beams to measure lengths. Light sources emit infrared rays that pass through the object being measured. An array of photo detectors detects the amount of light reflected from the object. The resulting data is converted into numerical values and displayed on the LCD screen. The user slides the ruler across the part being measured. As he does so, the readings change according to the position of the ruler relative to the object.

The Importance of Purchasing Quality Machinist Rulers

Machinist rulers are essential tools for anyone who uses power tools. There are many different types of machinist rulers available today, each designed specifically for certain applications. Some are designed for general use while others are intended for specific purposes. For example, there are several different types of machinist rulers available for measuring angles, distances, and heights. Other types of machinist rulers include those that measure widths, lengths, and depths. Each type has its own unique features and benefits.

Types of Machinist Rulers Available Today

There are three main categories of machinist rulers available today. First, there are standard machinist rulers which are typically sold in sets of two. Second, there are specialty machinist rulers which are generally sold individually. Third, there are combination machinist rulers which combine both standard and specialty machinist rulers into one tool. All these types of machinist rulers are useful for different applications. However, no matter which type you decide to purchase, always be sure to read the instructions carefully prior to using it.

Standard Machinist Rulers

These are the most common type of machinist ruler available today. Standard machinist rulers are typically sold in sets of two. One set consists of a horizontal rule and a vertical rule. Both rules are identical except for the fact that the vertical rule measures height while the horizontal rule measures length. Another pair of standard machinist rulers consist of a diagonal line and a right angle triangle. Again, both rules are identical except for the fact that the right angle triangle measures distance while the diagonal line measures depth.

Specialty Machinist Rulers

This category includes machinist rulers that are designed for specific applications. Specialty machinist rulers are generally sold individually. Examples of these types of machinist rulers include:

Angle gauges - Used to measure angles between 90 degrees and 180 degrees

Distance gauges - Used to measure distances between 0 inches and 12 feet

Height gauges - Used to measure heights between 1 inch and 6 feet

Length gauges - Used to measure lengths between 2 inches and 24 feet

Features To Look For When Buying A Machinist Rulers

Machinists rulers are essential tools for anyone who uses machinery. There are many different types of rulers available today, each designed for specific purposes. Here we’ll discuss some features to look for when purchasing a machinist ruler.

Size Matters

The size of the ruler is very important. Most manufacturers recommend using a ruler that has markings between 1/16th and 1/8th inch (1mm). However, there are several exceptions to this rule. Some machines require a smaller scale while others require a larger scale. Therefore, it is recommended that you measure the machine part you wish to mark and determine which type of ruler you need based on its measurements.


Rulers are meant to be used daily. Therefore, durability is another key factor to consider when selecting a machinist ruler. Many companies sell plastic rulers that are durable enough to withstand heavy usage. Other brands manufacture metal rulers that are stronger and last longer. Make sure you select a ruler that meets your needs.


Most machinist rulers include a built-in micrometer. Micrometers allow users to measure parts within 0.001 inches. Although most micrometers are accurate, they aren’t always precise. Therefore, it is highly recommended that you test the accuracy of your chosen ruler prior to making purchases. An inexpensive way to check the accuracy of your ruler is to compare the measurement of two identical objects. If the results differ by more than 0.001 inches, then you should reconsider your choice.


Many machinist rulers are ergonomic. Ergonomic designs reduce stress and fatigue during long periods of use. Additionally, these rulers are shaped specifically to minimize hand strain and improve comfort. Finally, many models are equipped with non-slip grips to ensure safe handling.


Although price isn’t everything, it does play a role in determining whether or not you should invest in a particular tool. Generally speaking, cheaper products are less reliable. Therefore, it is advisable to pay close attention to the quality of the product before spending money. Fortunately, there are many affordable options available today. Just remember that cheap doesn’t necessarily equal good.

There are many factors to take into consideration when deciding which machinist ruler to purchase. Hopefully,

Different Types Of Machinist Rulers

Machinists use different types of rulers to measure angles, lengths, and distances. There are many different kinds of machinist rulers available. Some are designed specifically for measuring specific parts of machinery while others are general purpose tools. Here we’ll discuss the most common types of machinist rulers.

Tape Measurer Ruler

This type of ruler has a tapered end which measures distance. Tape measurers are commonly found in machine shops where they are used to measure the length of pipes, tubing, etc.

Angle Gauge Ruler

These rulers are typically used to measure angles. Angle gauges are very useful in determining whether two pieces of metal meet together at right angles. An angle gauge consists of a flat base and a graduated arc. The arc represents the angle between the two sides of the piece being measured. For example, if you wanted to determine the angle between the top edge of a door frame and the bottom edge of the door jamb, you could lay the door frame across the floor and slide the angle gauge along its side. As the angle gauge moves along the edge of the door frame, the arc representing the angle changes. Once you reach the point where the edges of the door frame and door jamb meet, stop the angle gauge and read the number on the scale.

Level Rule

The level rule is another tool used to measure angles. Level rules consist of a straight edge (the “level line”) and a bubble vial attached to the opposite end. To use a level rule, set the level line on the object whose angle you wish to measure. Then turn the level around and attach the bubble vial to the object. Next, hold the level steady and tilt the bubble vial until it aligns with the level line. Read the number on the bubble vial to determine the angle.


Divider rulers are used to divide long objects into equal sections. Divider rulers are available in both metric and imperial measurements. Metric dividers are marked with millimeters and centimeters. Imperial dividers are marked with inches and fractions of inches. Dividers are handy tools for cutting sheet metal, pipe, tubing, and lumber.

Marking Gauge

Marking gauges are used to mark points on a drawing or blueprint. Marking gauges are available in several styles including dial marking gauges, digital marking gauges, and laser

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