Magnetic Ball Prism Base 1.5" – M8 External Thread, 3kg Holding Force

The magnetic ball prism base is designed for use with spherical prisms measuring 1.5" (38.1mm) in diameter. It features an M8 external thread and a magnetic holding force of 3kg, providing a mounting base for surveying and monitoring applications.

Supplied with a Ø40mm protective cover plate, the base has a 50mm distance from the underside of the base (without the weight) to the centre of the ball.

Key Features

• Designed for Ø1.5" (38.1mm) spherical prisms

• Magnetic holding force of 3kg

• M8 external thread made from stainless steel

• 50mm distance from the underside of the base to the ball centre, without the weight

• Supplied with a Ø40mm naturally anodised cover plate

Technical Specifications

• Product type: Magnetic ball prism base

• Compatible prism diameter: Ø1.5" (38.1mm)

• Thread: M8 external thread

• Thread material: Stainless steel

• Magnetic holding force: 3kg

• Distance to ball centre: 50mm

• Cover plate diameter: Ø40mm

• Cover plate finish: Natural anodised

Product Overview

This magnetic base provides an M8 external thread mounting solution for 1.5" spherical prisms. Its 3kg magnetic holding force and 50mm ball-centre height make it a practical component for surveying and monitoring setups.

To assemble a complete cone adapter, purchase separately the following components: ball prism 1448, centring pin 1482, cone adapter 1481, and either the Ø27mm circular level 1466.B or the integral circular level 1580.