i had to pop out to the car to get a tape... so took these, they are only camera fone pics, but u get the idea.
it was just some gash metal i found in the shed, kinda like the mechano stuff u used to get as a kid... measured, bent at 90 degrees with a vice and hammer.... 2 holes drilled, jobs a good 'un, filter doesnt actually move at all!!!




that help?