Tom Tee posted:No one uses mirrors to monitor hard to see train movements?
Well, I don't use any mirrors for train use. But with a very little seat-of-the pants experience, I can tell you this: The further away YOU are from a mirror, the LARGER it needs to be in order for you to effectively see as big a picture as possible.
That being said. if you're 30' away from a mirror and need to see a reflection located 25' away, you'll actually be looking at something as if it were 55' away. Therefore, a 36" dia. parabolic mirror would sure do a lot better job than anything smaller, I would think.
Just my logical opinion, of course. Hopefully the mirrors you mentioned are somewhere that you can look at them before buying one. Lean the mirrors up, step back 30' and see what you think.
