Tool for measuring curved surface product

The invention provides a tool for measuring a curved surface product, which comprises a curved surface lower surface positioning and supporting part and a side surface adjusting and positioning part, the curved surface lower surface positioning and supporting part comprises a supporting base and a plurality of micrometer adjusting structures, each micrometer adjusting structure comprises a fixing sleeve, and an internal thread is arranged in a central through hole of the fixing sleeve; supporting top columns are in threaded connection with the fixing sleeve, a hemisphere is formed at one end of each supporting top column, an adjusting handle is formed at the other end of each supporting top column, the length of the hemisphere extending out of the fixing sleeve can be adjusted by rotating the adjusting handles, and therefore the upper surfaces of the supporting top columns can be adjusted to abut against the lower surface of the curved-surface product; the side face adjusting and positioning part comprises a