Aerial Screw
| View Cart ⇗ | Info
An apparatus used for testing the powers of various electric batteries.
Source
Alfred E. Beach The Science Record for 1875 (New York: Munn and Company, 1875) 197
Downloads
2400×1870, 1.3 MiB
1024×797, 169.1 KiB
640×498, 83.5 KiB
320×249, 24.6 KiB