For sale is a Starrett #98-6 improved shaft testing level with ground and graduated vials.  The level was found in original box with old original paper wrap.  The box shows shelf wear but the level shows no marks or old owner markings.  The base of this level is concaved with a groove running the entire length.  The level is adjustable and has a outer tube for protecting the glass when not in use.  The level also has a cross level for help in not canting the level when leveling pipes and flat surfaces.  I have taken a number of pictures to show the level.  All pictures are part of my description.  Thanks for looking.  Question please Email thru eBay mail.