keep this tape sticky (free of paper fibers), the paper on the can should be covered with transparent tape or varnish. a piece about 1/8 inch by 314 inch serves to stick under one end of the sticky base, to hold the adjustment-thread. a 3/4 inch by 1- 1/4 inch rectangular piece of tape is used to make the finger hold -- important for making adjustments inside a dry-bucket.
with a needle or pin, make a hole in the plastic cover 1/2 inch from the rim of the can and directly above the upper end of the center line between the two leaves. the center line is marked on the pattern 