Standard tell-tale crack monitoring gauge

The original Tell Tale calibrated crack monitoring gauge since 1978. 

• calibrated crack monitoring gauge
• monitors horizontal and vertical movement across cracks to 1.00mm (Tell Tale Plus also available, to 0.1mm accuracy when used with Vernier, Dial, or Digital Calipers)
• tough acrylic construction
• supplied with crack monitoring record
• Tell-tale Plus, as well as corner- and displacement tell tale products, available on request