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 Denon turntables:
 
DP-59L
DP-59M
DP-60L
DP-60M
DP-67L
DP-72L
DP-790
DP-1100
DP-1200
DP-1800
DP-2500
DP-6700
DP-7700
DP-A100
DP-40F
DP-50F
DP-51F
DP-52F
DP-55L
DP-57L
DP-61F
DP-62L
DP-70L
DP-70M
 
The geometric features are compliant with Denon specifications; see the first picture.
 
It is supplied with detailed instructions.
We also make custom protractors to the client's specifications.