An imperial Rabone Folding Rule No. 1390 (Boxwood) marked out in inches.
The rule is marked 'J. Rabone & Sons, Birmingham England, Warrand Best Boxwwod, Made In England, No 1390'.
This is quite a hard to find rule.
Condition: the brass sliding rule is jammed in place as often with these old rules, please see photos for condition.
