StewMac Shop Rule
StewMac's custom rule for stringed instrument work, in inches or centimeters. Unique center-finder and vertical end scales measure guitar bridges, nuts and pickup heights. Satin chrome steel with sharp black etchings that are easy to read in low light.
Check Them Out Here:
http://www.stewmac.com/item/4905
If you have questions, please contact us through our webpage http://www.stewmac.com/email or visit our Facebook page https://www.facebook.com/StewMac