An old collectable Stanley Sweetheart Dual Wheel Marking Gauge No. 98.
Rods are marked out in inches up to 5” long though very worn.
One of the tightening nuts is marked 'Stanley SW, Made In USA'.
For general info about this tool, see the Stanley Dual Wheel Marking Gauge No.98 review on FindMyTool.co.uk
Condition: markings on rods are worn, please see photos for condition.