There is plovided a moisture mcasurcmcnt apparatus and a grain dryer capable of easily pcrforn,ing
a switching operation when thc sizc ofthe grain is changed becausc ofa changc in the kind ofgrains subjected to the measurcmcnt ofthe rnoisture. The catch openings 43a ofthe plurality ofgrain rnoving plates 43 are diffcrcnt in sizc from each other, depending on the size ofthe grain to be held, and first
pass above the different connection holes 42al and 42bl during
the predetermined mor.ement. By this means, when the size of the grain subjected to the measurement
of the moisturc is changed, it is possibie to supply thc grain loadcd in the hopper 4l to thc corresponding moisture rneasurcmcnt member 3 I only by changing the grain n.roving plate 43. Consequently, it is possible Io reduce the number of the parts, and prevent a mistake in setting for the measurement ofthe moisture contained in the grain.