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Compact module changing touch-trigger probe, which allows the use of a range of stylus configurations and extensions to access features on complex parts.

TP20 with MCR20 and PI 200-3

The TP20 is a compact 5-way, or 6-way, kinematic touch-trigger probe system. The two-piece design, comprising probe body and detachable stylus module(s), connected using a highly repeatable magnetic kinematic coupling. This provides the facility to change stylus configurations either manually or automatically without the need for requalification of the stylus tips, thereby giving significant time savings in inspection routines.

Modules offering a range of trigger forces allow the probe performance to be best matched to the measurement task. A set of probe extensions is also available, as is a 6-way module. The stylus mounting thread accepts styli from the Renishaw M2 range.

The TP20 system is easily retrofitted and is compatible with existing touch-trigger probe interfaces, extensions and adaptors.

System components

The system components are:

  • TP20 probe body
  • TP20 probe module - seven variants allow optimisation to suit application
  • MCR20 or TCR20 module changing rack - automatic operation
  • Suitable for interfacing with Renishaw's PI 7-3, PI 200-3 and UCC controllers

Sense directions

All modules except 6W


±X, ±Y, +Z

±X, ±Y, ±Z

Suitable interface

PI 7-3, PI 200-3, UCC controllers

Pre-travel variation


SF / EM1 / EM2




±0.60 µm (± 0.000023 in)

±0.80 µm (± 0.000032 in)

±1.00 µm (± 0.000039 in)

±2.00 µm (± 0.000079 in)

±1.50 µm (±0.000058 in)

Unidirectional repeatability

LF / SF / EM1 / EM2




±0.35 µm (± 0.000014 in)

±0.50 µm (± 0.000020 in)

±0.65 µm (± 0.000026 in)

±1.00 µm (± 0.0000395 in)

Repeatability of stylus changing



±0.50 µm (± 0.000020 in)

±1.00 µm (± 0.000040 in)

Stylus range


Mounting method

M8 thread

Probe modules

A range of seven, application specific, probe modules is available and are identified by coloured caps.


ApplicationTrigger forces*Stylus lengths

SF- Standard force

TP20 SF module

Suited to the majority of applications

XY: 0.08 N

Z: 0.75 N

Stylus: 10 mm

10 mm to 50 mm GF

LF- Low force

TP20 LF module

Low trigger forces applications - e.g. rubber seals

XY: 0.055 N

Z: 0.65 N

Stylus: 10 mm

10 mm to 30 mm

MF- Medium force

TP20 MF module

Where a higher trigger force than standard is required

XY: 0.1 N

Z: 1.9 N

Stylus: 25 mm

10 mm to 60 mm

EF- Extended force

TP20 EF module

Large stylus assemblies or where vibration causes spurious 'air' triggers

XY: 0.1 N

Z: 3.2N

Stylus: 50 mm

10 mm to 60 mm

6W- 6-way

TP20 6W module

Measurement in the –Z direction - e.g. undercuts

XY: 0.14 N

Z: 1.6N

Stylus: 10 mm

10 mm to 30 mm

EM1 STD- 50 mm extension

TP20 EM1

Majority of applications requiring a 50 mm extension

XY: 0.08 N

Z: 0.75 N

Stylus: 10 mm

10 mm to 50 mm

EM2 STD- 75 mm extension

TP20 EM2 module

Majority of applications requiring a 75 mm extension

XY: 0.08 N

Z: 0.75 N

Stylus: 10 mm

10 mm to 50 mm

* low force direction

Change rack


The MCR20 probe module changing rack is designed to securely hold stored modules for rapid automatic changing, and to protect them from airborne contaminants which may be present within the working environment.

Breathe new life into your inspection process

Upgrade your current probing system and see your costs reduce overnight.

Extended warranty

For peace of mind a 3-year warranty is available for your new CMM products during the first 3 months from purchase. Contact your vendor.

Product information

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