Greisinger balecheck hay and straw humidity measuring device greisinger balecheck 100 the greisinger balecheck 100 is a professional measuring device for measuring the moisture in bales of pressed hay and straw it allows you to precisely determine the suitability for storage and quality of hay and straw as well as grain important especially in agriculture stock breeding and horse keepingthe slim but robust measuring rod should be used for measurements at different depths if the maximal