A marking implement for a measuring apparatus in one example has a measuring extension with an upper surface with markings thereon and a lower surface. The marking implement in one example includes an upper clamp portion and a lower clamp portion having: a marking implement receiving device on the lower surface of the lower clamp. The marking implement in one example also has a hinge comprising the first hinge portion and second hinge portion and a clasp allowing for selective control of rotational movement of the hinge.