Imperial units show up in odd amounts at scale <1

[saurya]

At scale 0.5, we see 2640 feet, it would be more sensible to the user if it said 2500 feet and the scale bar actually measured out to that.

[saurya]

If the scales that were used for imperial <1 were instead:
0.0095,
0.0190,
0.0474,
0.0947,
0.1894,
0.4735

instead of:
0.01,0.02,0.05,0.1,0.2,0.5

then the rest of the code could stay the same. This would mean a separate set of scales for Imperial that would need to get switched out in the setScale method