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 SME Series II improved with a serial number above 439606. If you have an SME Series II improved with a serial number below 439606, please check our shop for the right protractor.

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

It is supplied with detailed instructions.

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