The digital scales are on special at the moment from a certain camping store for $10 (normally $50) and the bit of pipe was $5 from the local hardware. The 13mm combination spanner was sacrificed and makes both an open-ended and ring-end for the wrench.
The pipe was cut to 0.5 metre and allowance made for the spanner attachment at the business end. The ends were cross-drilled and tapped M6 for a screw and locknut to locate the spanner piece.
The setting you're aiming for is double the stated torque in kg*m (as the pipe is 0.5m). Pull steadily on the scale handle keeping it normal (at 90 degrees) to the pipe as you do.
