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Manchester Metrology introduces PMT Gamma Series Arm

Posted on 24 Jun 2025. Edited by: John Hunter. Read 176 times.
Manchester Metrology introduces PMT Gamma Series ArmThe PMT GAMMA Series of portable coordinate measuring arms is now available in the UK from official supplier Manchester Metrology Ltd, based in Ashton-under-Lyne, marking a new era in tackling the practical scanning challenges faced by manufacturers. Designed for usability, efficiency and flexibility, the GAMMA Series builds on the success of the ALPHA Series, delivering enhanced functionality for complex measurement tasks.

The GAMMA Series Arm sets a new benchmark in portable measurement with its innovative dual suspension support structure, offering enhanced stability and usability. Designed with the world’s first external decoupling and built-in balancing mechanism, the GAMMA Arm delivers optimal function, flexibility, reduced joint loads and extended standby time. Furthermore, its lightweight aerospace-grade carbon fibre build makes it a reliable and portable choice for both on-site and in-house applications. It is vailable in three configurations — GAMMA P (flagship), GAMMA M (standard) and GAMMA E (economic) — providing options to meet various requirements and budgets — prices start from £16,500 plus VAT.

Key Features include: the world’s first external decoupling and internal balancing system; dual suspension support structure; four-jaw quick-mount base collar; specialised 5G Wi-Fi module; smart sensing probe system; high-speed wired USB connection; and aerospace-grade carbon fibre construction.

Advanced approach

Force-isolation refers to the mechanism that separates the hand grip from the scanning head on the GAMMA Arm, effectively decoupling holding pressure from the gravity of the scanning head. This advanced approach ensures greater scanning accuracy and stability, especially for complex tasks.

PMTAn optional GAMMA blue laser scanner enhances the GAMMA Series with its optimised optical design, ensuring more stable scanning accuracy. It enables precise measurement in complex usage scenarios, addressing all required features and helping to overcome the bottlenecks that traditional contact probes face, such as measuring the dimensions of large, special-shaped workpieces, while maintaining optimal function.

An optional PMT GAMMA eight-axis rotary worktable is a complete rotary axis that connects directly with the GAMMA seven-axis arm, providing a fully enclosed, high-accuracy add-on axis that saves time and effort during hardware set up. Unlike turntables, the eight-axis is fully transparent to the measurement software and requires no software upgrades. This allows the real-time rotation of the workpiece in relation to the measuring arm, eliminating the need to reposition either the part or the arm.

Key benefits include: reduced measurement time — the eight-axis extends the measuring range, enabling users to scan, measure and digitise both small and large parts from a single arm position, reducing measurement time by up to 40% compared to a standard seven-axis arm; improved operator efficiency — the eight-axis removes concerns about measuring dead spots, ensuring minimal disruption to inspection tasks and enabling quicker digitisation of complex parts; and accelerated subsequent processing — by reducing the number of scans that need to be aligned, the eight-axis accelerates subsequent processing tasks by eliminating the need to move the measuring arm around the part or reposition the part to capture all necessary features.