Antique wooden marking gauge, layout tool, rosewood with brass decoration, untouched order patina, great looking tool, circa 1860's

This looks to be made of Rosewood and has brass decoration and set screw. The design and style could put this in mid 19th century possibly post Civil War. Mortise marking gauge that has the numbers visible. If it had a maker's mark it's gone now. I left it as order found other than wiping off the dust that was on it. The patina on this piece can only be found with age and quality. Measures 9"