A borrowed step ladder converts this gymnastic apparatus into an airship.
A PRACTICAL ADAPTATION
The ladder detached from the support is an invaluable adjunct to building and other operations.
THE PARALLEL BARS
The two bars are 2" x 2¼" X 6'-10" and are set 16½" to 18½" apart. The ends are beveled and the tops rounded.
Each bar is nailed to two uprights (2" X 3" X 5'-0") set 5' apart and extending 34" above ground. An overhang of about 6" is allowed at each end of the bar.