The 'Screwfix Deal Of The Day' is this SITE Rotary Laser Level which was £79.99 and is available today for £29.99 (plus £5 delivery, but see below)
Site description -
High quality instrument with integrated rotary action. Horizontally and vertically projects a beam up to 30m/100ft.
* Accurate to 0.5mm/m
* 3-Speed Rotation
* Dot & Cross Modes
* Heavy Duty Aluminium Case
Spend £50 or more to get free delivery, and use voucher to get 10% off.