Traditional Culture Encyclopedia - Hotel accommodation - What is the difference between mg, pg and hg in gundam model?

What is the difference between mg, pg and hg in gundam model?

Hg is 1: 144. There is no internal structure, and the mobility is slightly poor.

MG is 1: 100, with internal structure and strong maneuverability.

PG is 1:60, which belongs to the highest end and is more accurate.

There is another one called RG 1: 144, which has internal structure and strong mobility, but few varieties.