High precision arc protractor for cartridge alignment.

This protractor is made of 3mm High Glossy Black Acrylic Perspex, high-precision laser cut and engraved.

The arc protractor is the most precise protractors for cartridge alignment, this one is designed for Jelko SA50 and SA200 tonearms

The geometric features are compliant with Linn recommendation:

Pivot to spindle distance: 222mm

Effective Length: 237.41mm

Overhang: 15.41mm

Offset Angle: 21.98

Supplied with exhaustive instructions.

Cartridge Arc Alignment Protractor. For use with Jelko SA50 and SA200 Tonearms.



    We are a British Company with registered office in London, while the manufacturing unit is near Glasgow. We are exclusively b2c; this means that our products are available only from us, no mid men, we design, produce and sell directly to the end-user.


    The 'Loch Eite' is here. A smashing product, also available as an Open Source project!

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