The RS PRO magnetic base features a flexible arm which can be locked in any position by a single lever. It is fitted to a switchable magnetic base which has a 40 kg (400N) pull. It will hold plunger or lever indicators with stems/spigots between 3 to 13 mm in diameter. The bases are magnetic so that they can be attached to metal surfaces securely without the need for screws.

RS PRO bases and arms are a type of accessory and are ideal for use in test and measurement applications for both commercial and professional users.

Bases and arms are extremely useful instruments and are used within various applications including:
General workshop inspection
Maintenance