A selection of black high-quality compression mouldings with brass bushes suitable for inch diameter spindles. The knobs are recessed to accommodate control mounting nuts, except the Standard inch version, which also has a 6BA grub-screw. All other knobs have 4BA grub-screws.

Collet knobs

RS PRO Standard Potentiometer Knob

These standard potentiometer knobs from our own RS PRO brand are suitable for a 6.35mm shaft. With Brass bushings and a high-quality plastic casing, these potentiometer knobs are durable and practical. With a range of compatible knob skirts available, they are ideal for a variety of applications and environments.

A professional kit for construction of many different special buttons with clear colour markings.

Shaft Fitting & Skirts

Control Knobs in (6.35mm) Shaft Fitting

Features and Benefits

• Resists shock, vibration, or accidental movement
• No special mounting hardware or tools required
• Made of highest quality materials
• Occupies minimum panel space

There are many different uses of a potentiometer. The three main applications of a potentiometer are:

• Comparing the emf of a battery cell with a standard cell
• Measuring the internal resistance of a battery cell
• Measuring the voltage across a branch of a circuit

How does potentiometer work?

Most potentiometer knobs are simply fixed on manually with a simple push by fitting it to the shaft. They either have a knob, screw, grub, or slider as a fixture that is used as a control element to vary the resistance between the middle terminal and either one of the outer terminals for the potentiometer.

RS PRO

RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.