In this article, we will discuss the types of altimeters, their applications, and the key aspects you need to consider when choosing the right tool.
What is an altimeter?
An altimeter is a measuring device. It is used to determine the height of objects or elements, usually in relation to a flat surface (e.g. the working surface of a measuring table). Its basic function is to measure the distance between a reference point and any point on the object being measured.
Height gauges are characterised by high measurement precision, often reaching single micrometres. This makes them indispensable tools in applications requiring high accuracy.
Types of altimeters
There are several types of altimeters available on the market, differing in terms of their operating principle, measurement accuracy and application.
Here are the main types of altimeters:
Analogue/vernier and dial height gauges
Analogue altimeters are also known as vernier altimeters. These are traditional measuring devices that work by moving the measuring tip along a vertical guide. The measurement result is read from a precise vernier scale. In the dial version, the vernier scale is replaced by a dial, as in typical dial gauges. Operating this type of height gauge requires skill, and the reading itself can be time-consuming and prone to user error. Analogue height gauges are most often equipped with a tracer tip and are used for tracing, less often for measuring.
Digital altimeters
Thanks to the use of electronic measuring systems, they allow for quick and precise reading of results on an LCD screen. Digital models eliminate the risk of reading errors. This makes them more convenient to use than their analogue counterparts. Many digital altimeters offer measurement data storage functions, as well as the ability to transfer data to a computer or other external devices. This is particularly useful in quality control systems.
Precision digital height gauges (1D and 2D)
Precision digital height gauges feature a constant pressure system, which ensures extremely accurate and repeatable measurements. Height gauges of this type are used exclusively for measurement purposes (not for tracing). In addition to basic functions such as measuring distances, hole diameters and their spacing, they have a number of advanced functions such as perpendicularity measurement, min/max/delta measurement, entering tolerances for measured dimensions, statistical analysis of measurement series, graphical visualisation of results, generation of measurement reports and creation of measurement plans. One of the interesting functions is the 2D function, which appears in the height gauge as "2D". This option allows you to measure a detail in two axes, so you can measure characteristics that cannot be measured in one axis.
The use of altimeters
Altimeters are widely used in industries where precise measurement of parts and components plays a key role.
Some of their most important applications include:
Quality control in the engineering and automotive industries
Altimeters are an indispensable tool in quality control in the engineering industry. There, precise measurements of components such as shafts, bodies and other machine components are crucial for the proper functioning of equipment. In the automotive industry, height gauges are used to check the dimensions of mechanical parts such as pistons, cylinders, suspension components and many others.
Aviation industry
In the aviation industry, precision affects passenger safety. Altimeters help in aviation to control the accuracy of structural components, such as engine parts, wings and fuselage components.
Tool production
In the tool industry, where the production of precision tools such as milling cutters, turning tools and drill bits requires micrometre-level accuracy, height gauges enable the dimensions to be checked for compliance with technical documentation.
Key features of altimeters
If you want to choose the right altimeter for your specific needs and particular application, pay attention to several key features that affect its functionality, accuracy, and ease of use.
Measuring range
The measuring range is the first parameter of an altimeter that you should check. The measuring range determines the maximum height that you can measure with the device. Standard altimeters offer measuring ranges from 150 mm to even 1800 mm, and even more. The value of this parameter depends on the model and intended use.
Resolution
Measurement accuracy is one of the most important parameters when selecting an altimeter. For mechanical and digital altimeters, the accuracy is usually between 0.01 mm and 0.0001 mm. This allows for precise measurement results.
Base stability
The base of the altimeter should be stable. This has a fundamental impact on the accuracy of measurements. Heavy, wide bases ensure the stability of altimeters during operation. This minimises the risk of errors resulting from vibrations or shifts.
Additional features
Modern digital height gauges offer many additional features. They increase the convenience and precision of measurements. Pay attention to such innovations as: wireless data transmission (e.g. via Bluetooth), automatic shutdown after completion of work, the ability to reset at any point, as well as the ability to work in different units of measurement (mm, inches).
Ergonomics and ease of use
The altimeter should be comfortable to use, especially for long-term measurements. An ergonomic handle and a clear display (for digital models) are features you need to consider when choosing the right model for you.
Summary
An altimeter is an essential tool for precise measurements in industry and measurement laboratories. Thanks to its accuracy, variety of models and functions, it allows for quality control and accurate measurements of structural elements, which is crucial for production and safety in many industries. When choosing an altimeter, pay attention to accuracy, ergonomics and additional features that will facilitate your daily work and improve the efficiency of your measurements.
