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(5)

3/8")
1/2")
5/6") 7 1/2 ozs. per square yard. Heavy cotton fabric.
3/4") Two complete laps with 3/8" overlap 1/16"
7/8")
1")

GLUE.

The adhesive medium between the gut and canvas, and between the layers of canvas to be a casein cement to B.S.S.2.V.2. as applied to hulls and floats (1,000 pounds.)

EXTERNAL FINISH.

The canvas to be coated externally with pigmented oil varnish (red) to B.S.S.2.X.1., and after the external reinforcing aluminum wire is in position, a coat of seaplane varnish to B.S.S.X.17 is to be applied externally to the tubing and wires.

EXTERNAL REINFORCING WIRE.

3/16") Bore Tubes. Aluminum 17 S.W.G. or Copper 18" S.W.G.
1/4 ")
5/16") Pitch 7 1/2 per inch.

3/8") Bore Tubes. Aluminum 14 S.W.F. Pitch 4 per inch.
1/2")
5/8")
3/4")
7/8")
1")

875