A Mother of Pearl Artist Plumb Bob to Aid Drawing or Painting Objects...
A 19th century set with ivory handles and German silver compasses,...
The set, in its original fitted case includes 3 side adjustment...
Three Steel Erasers With Ebony Handles. These are probably 19th...
Proportional Rack and Pinion Dividers by Harper and Tunstall Ltd.,...
The Ivory Set-Square ruler and the parallel rule were made with...
A Rare 6" combination Ivory Rolling Rule and Sector by ELLIOTT...