Rare 18th c. Georgian-era Scientific or Drafting Instrument, Ivory Ruler in Fine Shagreen Etui, Case Georgian jewelry We've all seen the Halloween

We've all seen the Halloween decorations out in shops over the summer and I guess it's a thing so thought this would fit right in perfectly

though it appears perhaps a very small escutcheon there might have gone missing - hardly noticeable

A slight dent to the 15k gold backing

The focal point on the 6 1/4" x 5" and 1" deep tray is that portrait miniature of a Renaissance Musketeer or Cavalier

Rare 18th c. Georgian-era Scientific or Drafting Instrument, Ivory Ruler in Fine Shagreen Etui, Case Georgian jewelry We've all seen the HalloweenA rare and very elegant survival from the 18th century a gentlemans pocket expanding ruler housed in its original green shagreen tui. The ruler is formed of seven slender ivory sections (3 closed length), joined with brass rivets, and inked in red with finely drawn linear decoration and numbering. When extended, it forms a practical measuring rule, compact enough to slip into a waistcoat pocket yet precise enough for architectural, surveying, or