| Table III Long Scale Devices with Gunter Lines, Gridirons and Graphical Charts & Tables | |||||
|---|---|---|---|---|---|
| Gridiron Scales | |||||
| Maker | Model No./Type | Sections | Approx Date | Effective Scale Length (cm) |
Data Source |
| Illgen, Paul | Calculating Table | c1920 | Atzbach collection | ||