Multipurpose stationery tool

A multipurpose stationery tool, comprising:

• a base extending in a longitudinal direction, said base comprising a first end, a pair of pivot holders mounted at said first end and spaced in a transverse direction perpendicular to said longitudinal direction, a pair of first position-limiting portions respectively disposed in said pivot holders at one side, a pair of second position-limiting portions respectively disposed in said pivot holders at another side, and a second end extended in said longitudinal direction opposite to said first end;
• a supporting unit adjustable in position relative to said base, said supporting unit comprising a pair of pivoting portions respectively pivotally connected to said pivot holders and a pair of swinging portions opposite to said pivoting portions, said supporting unit being adjustable relative to said base between an extended position where said supporting unit is stopped in place relative to said base by said first position-limiting portions and a received position where said supporting unit is stopped in place relative to said base by said second position-limiting portions;
• and
• an upper holder block adjustable in position relative to said supporting unit, said upper holder block comprising a holder block base, a pair of extension rods bilaterally extended from one side of said holder block base, two pivotal couplings located at a bottom side of said holder block base and spaced in said transverse direction and respectively pivotally connected to said swinging portions of said supporting unit, and two stop portions respectively located at said pivotal couplings at one side and adapted for stopping against said swinging portions in said extended position.