Rolling type of Parallel rule with octagonal ends
- Made:
- 1907
Parallel rule with octagonal ends, rolling type, by W.C.Harrison,1907
Details
- Category:
- Mathematics
- Object Number:
- 1985-872
- type:
- parallel rule
- credit:
- Phyllis Harrison, D.
Parallel rule with octagonal ends, rolling type, by W.C.Harrison,1907