Scientific Instruments > Drawing Instruments

Proportional Dividers by Harper and Tunstall, London.

Item#: SDI1189

SOLD

 

Proportional Rack and Pinion Dividers by Harper and Tunstall Ltd., London. Made of German silver and molded steel tips. This Proportional Dividers are used for dividing lines or circle circumference into even segments and for enlarging or reducing drawings in exact scale of different ratios. The rack and pinion mechanism provides the most accurate adjustment method for reductions or enlargements that can be transferred from the original scale drawings. Comes in its original fitted mahogany box.