Blundell Rules Limited (B.R.L.) Academy 300 (10-in

Made:
1955-1965 in England

Blundell Rules Limited (B.R.L.) Academy 300 (10-inch) slide rule with plastic sleeve

Details

Category:
Mathematics
Object Number:
1998-424
Materials:
complete and plastic
type:
slide rule
credit:
Mr J.C. Michie