Abstract: A locking and measuring device which includes a housing having a top wall, a bottom wall, a first spaced end wall and a second spaced end wall, with a first opening in the first spaced end wall, and a second opening in the top wall, an extendable length of substantially strong and durable, yet bendable material having a terminal end, the length of material being normally, retractably stored in the housing with the terminal end at all times exteriorly accessible of the first opening; the terminal end of the length of material includes a locking end zone to be inserted into the second opening wherein it is matingly received and releasably captivated until released; along the length of material graduated indicia are provided defining a measuring scale.