Micrometers

Micrometers are mainly used to determine the length of small and medium-sized objects and workpieces. The micrometer is used when a measurement needs to be carried out quickly but still needs to be precise. The handy, small tools are ready for use anytime, anywhere. Micrometers are very robust tools and have a hard metal tipping on the measuring surfaces. The HM tipping prevents the tips from wearing out over time. This ensures precise measurements and exact measurement results.

Outside micrometers - also called micrometers or micrometer screws - are instruments that allow very precise measurement of small distances. The sleeve of the micrometer has a scale on which measurements can be seen. Depending on the version, outside micrometers allow measurements in the 1/1000mm (thousandth of a millimeter) range.

Set and read the micrometers correctly

The ideal setting for the measuring force is 5N to 10N (Newton). In order to determine precise measurement results, the measuring spindle is screwed in with the clutch – also known as a ratchet or feeler screw – without any effort. This limits the measuring force to the optimal range. The insulating plate on the bracket also ensures that hand heat does not affect the measuring accuracy.

The structure of the micrometer corresponds to Abbe's comparator principle for mechanical length measuring devices, according to which the measuring section and measuring scale of the micrometer are arranged in a line (aligned). Measurement errors caused by tilting are thus minimized. The size of the specimen is read off two scales. The first shows the pitch of the screw - usually in whole or half millimeters. A second scale - the fine scale - shows the pitch of the thread. The portion of the size of the workpiece that is only fractions of the pitch and therefore cannot be displayed in whole or half millimeters appears here. Now both values are simply added.

There are also digital versions that enable (wireless) data transmission to software. The micrometer is therefore one of the most comprehensive measuring devices. Outside micrometers have a large number of special designs - which means they can be used in almost all industries. Inside micrometers are usually used to measure inside measurements and diameters, e.g. of boreholes. The inside micrometer is available in digital and analogue versions. Depending on the field of application, two-point micrometers are used if the recess to be measured has different gradients, or three-point micrometers for blind holes and through holes. In precision engineering, there are enormous demands on precision for any measurement. Internal micrometers must therefore be able to record the desired measurement data extremely precisely. To ensure this, they are able to carry out measurements with an accuracy of up to approx. 2 µm. In order to permanently prevent falsified measurement results due to abrasion, the measuring surfaces of internal micrometers are usually provided with hard metal. This effectively prevents usage-related wear and tear.

In our range you will find both two and three-point micrometers as well as the digital and analog versions. These precision instruments also ensure very accurate measurement results.

Measuring boreholes with depth micrometers

One of the special forms of micrometers are the depth micrometers. This was specially designed for depth measurement. The measuring tip of the depth micrometer is a thin needle with a flat measuring surface. This means that smaller boreholes and comparably narrow areas can also be measured. The individual measuring range can be expanded by extensions. Depth micrometers usually cover the measuring range from 0mm to 300mm. Standard depth micrometers have an accuracy of up to 0.003mm. In the digital version with minicomputer, Microtech micrometers achieve an accuracy of up to 0.0001mm.

Micrometer Heads – for measuring tables and to define distances

Installation micrometers - or micrometer heads -  are used, among other things, as a permanent installation on measuring devices such as an XYZ measuring station. The micrometer gauges are used to determine distances or for series control measurements. In the digital version, the data can be transferred to a Windows computer, Android or Apple smartphone via cable or Bluetooth. Micrometer gauges impress with their high precision and compactness. They are also designed for very fine measurements. Smaller micrometers have a measuring range of up to 6.5mm. Larger ones then cover the range of up to 50mm. Here, too, there is a large number of different designs to choose from. In addition to small micrometers, there are also models with a large drum or non-rotating spindle.

Micrometer gauges can have different forms of measuring tips. Convex tips are intended for round or concave objects and workpieces. By touching the points, the route of the highest points is determined. Built-in micrometers with flat measuring tips, on the other hand, are intended for flat objects. When it comes to micrometers, you can choose between an analogue measuring scale, a digital display or a mini-computer.

Analogue, digital Display – or with Minicomputer

The choice between the various readout options depends on various factors. Micrometers with an analog scale are particularly robust because they work purely mechanically. There is no built-in technology. Humidity or dust cannot usually damage the micrometers. Digital micrometers with IP54 protection are available as an alternative. These are then dust and splash-proof. Digital micrometers get their power from a separate power source, a button cell. As a result, the small design can be retained.

Digital micrometers can measure both mm and inches. You can easily switch between the two units at the touch of a button. Reading from the digital display is much easier. The data interface, which can be read out directly via USB or RS interface, also speaks in favor of digital micrometers.

As with calipers, the supreme discipline is the micrometer with minicomputer, as offered by Microtech. No other provider has as much flexibility as the measuring tools from the Ukraine. The minicomputer comes with comprehensive software that includes standard Go/NoGo evaluations, mm/inch conversions, temperature compensation and much more. In addition, the data can be transmitted with the Bluetooth module over a distance of up to 50 meters to a Windows PC, Android or Apple smartphone. Here, too, there is comprehensive software that can be used to further process the data.