The curiosity was prompted after browsing a 'Vintage' (brand) website.
It was noted that the 'parlour' guitar V880N had it's scale length quoted at 648mm whilst other (larger) models such as their 'dreadnoughts' and 'jumbo's' were 642mm.
If I intended to buy, I would obviously try both (re 'here's an idea, try playing them' from guest on 24 Jan 01-49pm).