Toy tools used in experiments on the gender behaviour of children

Selection of plastic toy tools, fixings and carpentry demonstration pieces, used in experiments on the gender behaviour of children, unsigned, made in China, 1990-2000. Consisting of: (1) four nuts and bolts; (2) one combined ring and open-ended spanner; (3) one pair of 'Multigrips Pliers' ; (4) one 'Adjustable Wrench' (spanner); (5) one 'Pipe Wrench' (Stillsons) wrench; (6) one 'T-Driver' (T-bar) and extension piece; (7) one screwdriver with detachable cross-head (pozidrive) and flat bit pieces; (8) one 'Snapcutter' knife; (9) one claw-hammer; (10) one 'Sack Saw' (hacksaw); (11) one 'Wood Plane' (smoothing plane); (12) one 'Variable Calliper' (dial measuring calliper); (13) one 'Lever' (spirit-level); (14) one 'Solid Square' (set square); (15) two dowl jigs; (16) one carrying bucket.