Henshin, as it is a link with SL, will use the same measure units, that is meters and  sexagesimal degrees (fitting with the parameters specified in the edit window of the primitives).

We must be careful, therefore, with the limitations of SL, that is, we can't create pieces greater of 10 meters and smaller of 1 cm. Although the decoder is a silly system than can generate data beyond the limits they will be ignored when the objects are rezzed in SL.