Alternative form of 螺子回し

machine; machinery

a repair

mend, fix, repair

to use / to employ / to make use of, to apply / to spend

a screw / a spring or coil that can be wound, such as that of a clock

thread of a screw

screw

ねじ山: screw thread

器械: a device, an appliance, a mechanism / 機械: a machine, equipment, an apparatus / 器械: a utensil, a tool, an instrument / 器械: a tool for conducting a test or experiment or for measurement