Renishaw M3 Rotary Knuckle, L 17 mm CMM Styli New 1 Year Warranty A-5003-4686

MSRP: $130.00
(You save $25.00)
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1.00 LBS
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Product Description


New: A brand-new, unused, unopened, undamaged item in its original packaging.



Country of Manufacture:   UNITED KINGDOM

Brand:    RENISHAW

Model:    M3 ROTARY KNUCKLE, L 17 MM

MPN:   A-5003-4686



Item Description

Renishaw M3 Rotary Knuckle, L 17 mm New with 1 Year Warranty.


Renishaw List Price $130.00

Rotary Knuckles:

Are designed to allow the adjustment of the stylus tips angular alignment.

Technical table

Length (mm)


Stem material

Stainless steel



To mount


A few simple rules can be applied to maximize accuracy for most probing applications:



Overall length

Renishaw uses a standard description of overall length, measured from the rear mounting face of the stylus to the centre of the ball. 

Effective working length (EWL)

This is measured from the centre of the ball to the point at which the stem will foul against the feature when measuring 'normal' to the part. 

Rules for choosing a stylus

A few simple rules for stylus selection can be applied to maximize accuracy for most probing applications 

Keep styli short

The more the stylus bends or deflects, the lower the accuracy. Probing with the minimum stylus length for your application is the best option. 

Minimise joints

Every time you join styli and extensions, you introduce potential bending and deflection points. Try, wherever possible, to keep to the minimum number of pieces possible for your application.

Keep the stylus ball as large as possible

Reasons For This:

  • it maximises your ball/stem clearance, thereby reducing the chance of false triggers caused by 'shanking out' on the stylus stem, and increasing the EWL;
  • a larger ball allows a larger stem diameter, increasing the stiffness of the stylus;
  • the larger ruby ball reduces the effect of the surface finish of the component being inspected.

EWL can also be affected by assembly tolerances. For this reason Renishaw styli are assembled to exacting standards in controlled conditions.


This is by far the best price you will find on a Renishaw M3 Rotary Knuckle, L 17 mm New

with 1 Year WarrantyPurchase with confidence from a Paypal verified retailer. If what

you order is not what you receive you will be refunded the full purchase price of this sale.

Metrology Parts would like the opportunity to earn your business for this sale and all of your

future Renishaw needs. If you have any questions feel free to contact us. With 36 plus years

of experience with Renishaw products we can help with all of your application needs as

well as your after sales support.

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