Meeting the mirror specifications required advances in both the design and fabrication processes, particularly to achieve an r.m.s. flatness of 5 nm on the segments and to ensure less than 2 nm be ...
Getting blue tack or stickers off your walls can be tricky, with the risk of chipping the paint beneath too. But fear not, the experts say the right tools and a bit of prep can get those stains ...
And are feeling much more at ease about it all, but the question remains, WHY the heck has somebody removed part of the chimney breast to stuff it into the cavity wall? As we say in Yorkshire ...