wagner meters c555 concrete moisture meter - pinless wagner meters the c555 concrete moisture meter provides fast, non-destructive preliminary moisture measurements on smooth, firm concrete to help pinpoint problem areas and determine where to place rapid rh l6 smart sensors. with its built-in ambient sensors and included on-demand calibrator, the c555 comes with everything you need to perform the test as outlined in astm f2659. kit includes: c555 concrete moisture meter paired on-demand calibrator rubber protective boot foam-lined abs plastic carrying case 9v battery instruction manual