For sale, a 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 accurate protractors for cartridge alignment; this one is designed for the following Ortofon tonearms:
AS-309i
RMA-309i
RMG-309i
RMG-309 Limited
RKG-309
The geometric features are compliant with Ortofon specifications; see the first picture.
 
It is supplied with detailed instructions.
We also make custom protractors to the client's specifications.
Made in Scotland