Apart from being more of a 'scratch and kitbuilders' scale.....and having one of the best supporting organisations of any scale........the main difference is in the 'bulk' of each item.
TT..or 3mm scale, is to my mindthe best of all worlds, for a railway.
N gauge..or 2 mm scale, is just too much like watchmeker's stuff for my liking.....and for an older person, requires considerable eyesight correction.
OO [4mm] or even HO [3.5mmscale] are popular, and VERY well supported by the trade, especailly with ready-to-run stuff.....however....if one is strapped for space...or finds the idea of self- making of stuff, rather than chequebook, buying off-the-shelf trains....the 3 mm scale is ideal.....not so tiny that one's eyesight is strained....yet needs considerably less space than OO or HO stuff...
so to my mind, 3mm scale [or TT] combines the space requirements of N gauge, with the size and detail advantages of OO.
and I am looking at an old Tri-ang TT suburban brake coach as I speak..all I have left off my youthfull TT empire.
TT..or 3mm scale, is to my mindthe best of all worlds, for a railway.
N gauge..or 2 mm scale, is just too much like watchmeker's stuff for my liking.....and for an older person, requires considerable eyesight correction.
OO [4mm] or even HO [3.5mmscale] are popular, and VERY well supported by the trade, especailly with ready-to-run stuff.....however....if one is strapped for space...or finds the idea of self- making of stuff, rather than chequebook, buying off-the-shelf trains....the 3 mm scale is ideal.....not so tiny that one's eyesight is strained....yet needs considerably less space than OO or HO stuff...
so to my mind, 3mm scale [or TT] combines the space requirements of N gauge, with the size and detail advantages of OO.
and I am looking at an old Tri-ang TT suburban brake coach as I speak..all I have left off my youthfull TT empire.