Stuart Tallack writes:

Has anyone used a Simplex tank recently? There is some information on the ‘net but it is not clear to me if the tanks work reliably. I picked one up for 99 pence and, to my great surprise, it is complete and undamaged. I had to dismantle it as it had been put away without washing and parts that should move relative to one another were adhering together. Much as I like trying a new tank, I don’t want to waste a film if informed opinion is that the Simplex does not work well. I know that a sensible man would stick to the Rondinax 60, but curiosity draws me to its competitors.