£190
The Willoughby Calculating Scale No 10 a very rare boxwood creeping barge scale double slide rule by J. TREE London with Speed of Object in Miles per Hour, Walk, Trot, Gallop, Elevation Above Line or Sight etc etc some staining o/a but all legible, in orig leather case G
Fees apply to the hammer price:
Room and Absentee Bids:
22% inc VAT*
Online and Autobids:
22% inc VAT*