Boots Ringplan precision Log-Log (5-inch) slide ru

Made:
1970-1975 in Japan
maker:
Boots Contract Manufacturing

Boots Ringplan precision Log-Log (5-inch) slide rule by Boots Contract Manufacturing with plastic sleeve and instructions

Details

Category:
Mathematics
Object Number:
1998-437
Materials:
complete and plastic
type:
slide rule
credit:
Mr J.C. Michie