Rickresource Rickenbacker Forum

Does anybody know what size allen key is needed to adjust the action on the bridge of a 4003.
And is it Metric or Imperial?

AFAIK RIC does not use any metric hardware. The allen you need is a 1/16". I don't know how common non-metric tools are where you are but you may be able to get one at your local hardware store.

Thank you very much, I will investigate.