A mechanical tensioning device consisting of a webbing strap and a ratcheting buckle mechanism used to secure exhibit components, crates, and freight during transport or to hold structural elements in position during installation. Ratchet straps are standard equipment in the exhibit shop and on the show floor and are used wherever loads need to be firmly secured against movement. Proper use of ratchet straps during crating and transport is essential for preventing damage to exhibit materials in transit.