How to measure the span of a rowing boat

In this video, Lachlan demonstrates how to measure the span of a rowing boat.

Video Transcript

​So this is how you measure the span of a boat it's easiest if you start on the 100 mil and put it in the middle of the seam of the gate which is just here and you have to make sure it's pointing straight and you measure from this side and on to the other side and try and have the tape measure as straight as possible and to the same spot so here it indicates that this span is 160 centimetres because you have to subtract that 10.