Abstract: A movable assembly is formed of a reciprocable sub-assembly and a pivotable sub-assembly. The reciprocable sub-assembly has a tubular housing. The tubular housing is reciprocable within a receiver. The reciprocable sub-assembly has a block reciprocable within the housing. The pivotable sub-assembly has a trailer hitch ball and a pivot sleeve. A neck fixedly couples the trailer hitch ball and the pivot sleeve.

Abstract: A girth measurer includes a generally tubular elongated body with interior and exterior ends. The girth measurer includes a handle at the interior end. The girth measurer also includes a generally triangular guide at the exterior end. The guide has two upper slots and two lower slots. A slider is reciprocally mounted for movement within the body. A strap is fabricated of a flexible, inextensible material. The strap has first and second ends passing downwardly through the slots and attached to the slider. The strap is in two parallel sections between the triangular guide and the handle. The strap is in a closed loop between the two upper slots. The loop is of varying circumferences as a function of the position of the handle along the body.