Avondale Plus Tell Tale Crack Width Monitor

The Avongard Plus Tell-Tale is a precision gauge, consisting of two plates which overlap for a part of their length. The bottom plate is calibrated in millimetres and the top plate is transparent and marked with a hairline cursor in the form of a cross. The Plus Tell-Tale allows monitoring of horizontal movement of +/- 25mm and vertical movement of +/- 10mm. It also features spigots for use with calipers for precision measurement to 0.1mm. Fix using Screws and/or epoxy (not included but available as accessories) Supplied with full instructions and Crack Monitoring Record Sheet