Shagreen Draughtmans Set

With all the original implements for drawing and plotting, finely made from brass and steel, the Shagreen case contains the following

Folding Gradient Ruler

Ruler and Parallel Line Ruler

3 Steel adjustable Pens

2 Centre Punches 

4 Protractors   

12 tools altogether 

Case and clasp in good condition, closes firmly

Circa 1830