Remember that work was also force multiplied by the distance, but it was the dot product and used the cosine of the angle between the force and distance: force × distance × cos(θ).
In this laboratory the force will be perpendicular (90°) to the distance. The sine of 90° is one, therefore the torque will be:
Torque = Force × Distance to fulcrum × sin (θ)
Torque = Force × Distance to fulcrum × sin (90°)
Torque = Force × Distance to fulcrum × 1
Torque = Force × Distance to fulcrum