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What 1:48 means and how big are these figures?
1-48 is an exact scale, it means that the scaled models are 48 times smaller than the actual size of the real object. It is sometimes referred to as quarter scale because a quarter inch represents one foot and is equivalent to the model trains 0 scale in USA (in the UK 0 Scale is more commonly 1/43.5 or 7mm to the foot and in the rest of Europe 0 Scale is 1/45). Tamiya and other scale model makers have recently begun to manufacture a line of military ground vehicle models in this scale.
An average standing man in 1:48 scale is approximately 36mm tall, so 1-48COMBAT figures are fairly close in size to the commonly called 32mm (when measured to the eyes) or "heroic scale" wargame figures, but are slightly more realistically proportioned.