Aluminium measuring wedge, 1 to 20 mm

Stable crack width chart made of plastic in graduations from 0.05 mm to 1.2 mm in 0.05 steps, as well as 1.3 / 1.4 / 1.6 / 1.8 / 2.0 / 2.5 / 3.0 and 3.5 mm.
On the reverse side, coloured fields indicate the temperature in 1° C steps (from 8° to 32° C.).

Ideal for architectural engineers, carpenters, maintenance personnel, teachers, students and everyday home measurements to accurately measure cylindrical holes and obtain the correct size for repairs or replacement of wall cords.

This transparent crack width map is produced by laser exposure instead of printing, which enables extremely precise visualisation of fine crack widths. It is particularly suitable for users who require greater accuracy than is possible with the printing process.

Our high-quality crack monitor for indoor and outdoor use is the price alternative to the "TT-1" from TCL-I. We supply this crack monitor optionally with and without mounting material.