Everyone aware of the US/UK variant in spellings is well aware that words ending in “-er” in US spelling end in “-re” in UK spelling. For example, “fiber” and “fibre”; “titer” and “titre”. One should also remember that the converse is not always true:

Not all the words end in “-er” in US spelling end in “-re” in UK spelling.

Examples are “diameter” and “parameter”. Normally, geometrical terms (such as “diameter”, “perimeter”) and names of instruments (such as “ammeter”, “barometer”) end in “-er”. They do not have UK/US variations in spelling.

So does the brand “Tibre”.