Milenco precision calibrated nose weight gauge: Manufactured using unique materials so that its calibration remains accurate even after 1000 uses. Other noseweight gauges can be up to 30 kilos out after 1000 uses. 

With improvements made to the scale it is much clearer and goes up to 130 kilos and the noseweight gauge is accurate to within 2 kilos (as required by BS7691)

The noseweight gauge is the same height as your caravan, so you do not need to block it up to use it.