How about Plan B?
sonnyyu:
Plan B;-
LR4- Interface Board for Fluke 414D Price: $149.00
FLUKE 414D /Newark Price: $129.95
Total: $280.00
http://www.porcupineelectronics.com/
distance:50 M
accuracy: +/- 2.0 mm
whole thread;- More powerful distance sensor? DISREGUARD COST. - General Electronics - Arduino Forum