| 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 |
| Aston & Mander | Hannyngton's - Extended (120") | 1884 | Lovett [2009] | ||