Provided is a microtome in which refrigerant piping and electrical wiring are not impeditive so that cleaning and other works can be surely conducted.The microtome includes a head 32 which holds a sample, an alignment mechanism 50 which aligns a head 32, a body portion 42 which is provided on the back face side of the alignment mechanism 50, a cylindrical coupling portion 41 which couples the body portion 42 with the head 32, a temperature controller 34 in the head 32, and refrigerant piping 40 and electrical wiring 46 for the temperature controller 34, and the alignment mechanism 50 includes a spherical member 68 coupled with the back face side of the head and having a spherical outer periphery and includes retainer portions 70 and 71 retaining the outer periphery of the spherical member 68 slidably along a spherical surface, the spherical member 68 has a through hole 74 formed communicating with the hollow portion 43 of the coupling portion 41, and the refrigerant piping 40 and the electrical wiring 46 are connected with the temperature controller 34 in the head 32 through the through hole 74 of the spherical member 68 and the hollow portion 43 of the coupling portion 41.
