AN UNUSUAL IN SIZE PROPORTIONAL COMPASS. Dimension: 14.6cm x 4.6cm (closed); thickness 4 mm. An unusual proportional compass, shorter than the usual pied du Roi, but larger in width. Engravings are somewhat primitive, but divisions are precisely made.An interesting instrument in good condition. The item "AN UNUSUAL IN SIZE PROPORTIONAL COMPASS" is in sale since Sunday, January 5, 2020. This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "danfrie1" and is located in MILANO. This item can be shipped worldwide.