This stainless steel ring with a foam insert and a graduated ruler attached is designed to make measuring the working length of endodontic hand instruments easy.

The foam pad allows you to keep those instruments in use for a procedure easily accessible.

All printing is indelibly laser etched and will not be affected by decontamination or sterilisation. It can be rotated to suit any desired position. 

It can be worn on the right or left hand. It will support any type of decontamination and sterilization.