For sale, a high-precision arc protractor for cartridge alignment.

This protractor is made of 3mm high-quality acrylic, coated with a yellow film, and high-precision laser-cut and engraved.

The first picture is for reference only; the real protractor looks like the one in the second and third pictures.

The arc protractor is the most accurate protractor for cartridge alignment; this one is designed for the following Grace tonearms:

• G-560L

• G-565F

• G-860F

• G-860FB

• G-660P

• G-960

The geometric features are compliant with Grace specifications; see the first picture.

It is supplied with detailed instructions.

We also make custom protractors to the client's specifications.