Latest Barclays mortgage ad.

[Rallentando]

What exactly is a 'seesaw' truck? Until this ad I have only ever seen them in old western films. What is the real name for it and what is it's purpose
Thanks in anticipation xxxx

[Buenchico]

Wikipedia to the rescue again ;-)
http://en.wikipedia.org/wiki/Handcar

[murraymints]

weren't they used by trackmen repairing rail track ?