What Is The Purpose And Proper Use Of An Instrumentation Knobs?

Instrumentation knobs are used for controlling or adjustments electronic applications and many industrial applications. The knobs are also referred to as control knobs, electronic knobs, or electrical knobs. Ideally, the instrumentation knobs are used to provide industrial machines or instruments with precise position adjustments and controlled circular motion levels. They are available in a wide range of styles, including slides, pointer, instrument, skirted, and even the two-shot instrument.

Besides, the knobs feature graduations in lines or numbers, providing an easy reference point for adjustments. The instrument knobs manufacturers provide customized printed logos or the raised type, and the knobs can be made of metal, plastic, or rubber.

Control Knob Mounting Styles

The control knobs may feature different mounting styles. When it comes to mounting, the knobs come with a bushing to be inserted into the bore, hence refining the bore size while providing rust resistance. Knobs with collet mounting consist of the outer body with internal hardware. Therefore, the internal body features a collet that is a sleeve with a cylindrical inner surface and has a conical outer surface. Therefore, when the collet is squeezed against the matching tapered stud, it contracts, creating a secure clamping hold on the stud. The collet mount knobs might be installed with a nut driver.

Instrumentation knob Features

  • Features angle mount knob mounted at any fixed angle, often between zero and ninety degrees.
  • For increased handling, the instrumentation knobs may feature textured grips.
  • Illuminated knobs ensure improved visibility, especially when the application is in low light conditions.
  • It provides an alternative for indicator or pointer, which is a line or a dot on the top or side of the knob.
  • The instrumentation knobs may feature a numerical scale for position indication.
  • For improved grip or handling, the knobs may be knurled. Knurling on the lathe cuts the pattern into the knob’s sides to accomplish improved grip and handling.
  • The latching knobs provide the capability to hold the knob in position.
  • Locking knobs prevent the knob from being moved without action by the operator. A pushbutton may be provided for unlocking or may come with a key.
  • The skirted knobs flare out at the bottom and might be marked with a numerical scale or an indicator.Instrumentation Knobs

As mentioned, the instrumentation knobs can be used in industrial applications and electrical appliances. Some of the everyday use cases include:

  • Appliances
  • Food Service
  • Valve/Oil and Gas
  • HVAC
  • Recreation equipment
  • Food equipment
  • Transportation
  • Medical equipment
  • Exercise machines
  • Machinery

When choosing the instrumentation knob, consider the material used to make the knob. Therefore, your application’s environment affects the material of the knob and that used on the knobs insert material.


Where human control is required on an electrical device, you must ensure the control knob meets the operator’s needs and the device’s needs where the knob is to be applied. Most control knobs are customized to provide ease of use and improved handling. Therefore, when searching for the best instrumentation knob for your electrical appliance, ensure you consider the use case.