It is the scale reading in kilograms (kg) when the batten is compressed minus the weight of the batten.
(the scale; reading; ) (It; is; the scale reading in kilograms (kg)) Context(It is,List([0, 5))):(the batten; is compressed; )
It is,List([0, 5))
the scale It the batten
reading is is compressed
the scale reading in kilograms (kg)