I've got a drawing for the Balao and Tench, Flood Ports and Valves.
The BMP image is small (1/24" = 1'), but blow it up double size (200%) and it's 1:144 scale, 300% = 1:96, 400% = 1:72, 600% = 1:48
If you don't have the sofrware or equipment to do that, copt it to a sick and take it to Kinko's. They can do it.
There's a scale (ruler) on it to check for scale. For 1:72, three inches on the drawing, will measure out at four inches. For 1:96 one inch equals one inch. For 1:144 three inches on the drawing measures two inches. For 1:48, one inch on drawing measures two inches.
The original drawing was 1:96, so one inch, on the drawing, equals eight feet.
If anyone needs, or wants, this drawing, email me at (at) cox.net>>.
Mike K.
[Old Forum Post]