dave brought next idea : Have you not got any local 'corner-shop' motor accessory shops in your town? They're the best place for something like this.
Machine mart have a range of folding ramps, for example: http://www.machinemart.co.uk/shop/product/details/ar3-36in-folding-aluminium-access-ramp?da=1&TC=SRC-ramps
http://www.suspendedceilingshop.co.uk/suspended-ceiling-lighting/1200-x-600-perspex-prismatic-diffuser"We do not currently supply ceiling grid at the Suspended Ceiling Shop" seems somewhat odd ...
But what would be the cost of having to go to the shop and buy one specially on the 3 times you did need it? Owain
This might fit http://www.toolstation.com/shop/Ironmongery/Window+Hardware/PVCu+Window+Handle+White/d170/sd3183/p92057 Failing that a local glazing company might have a selection.
On the rare occasions when I want chips I go to the chip shop.
According to the data sheet, the standard version of these will work in alkali, neutral or mildly acid liquids: http://www.puretechenvironmental.com/shop/float-switches.html Colin Bignell
I found this in an antique shop, for a fiver I couldn't resist buying it. https://flic.kr/p/oyFCXr The cover and frontispiece are completely detached.
Wonder just what you'd get if you went into a shop and asked for a 1.5 kW circular saw? Apart from a strange look, that is.
Plus it will err, expand and push the carafully positioned boards all over the shop. Basil