I'd love to give you the scale - but it's buried in my tool box, in the garage, behind fourteen locks
I bought it for a belt change job on my old 944 - needed to torque the water pump bolts down to 8nm. The scale is easy to read and the wrench has a nice, positive action. Used it, also, for tightening the screws on the Autobox filter on the Jag.
Personally, I only ever used it in one direction - but I think it is reversible. Looking at the Screwfix picture, it has a lever on the head - so I assume that it is. Sorry for the vague and wooly answers, but it's been a little while since I last used it
Wish I had got mine from Screwfix - mine came from e-bay and, with the delivery, worked out a few quid more than this one. Mind you, I did get it in red - which is definitely the best colour for Teng Tools
No idea what they cost now but switched from a Teng 5-25Nm wrench to a Roebuck (1 - 12ish NmIIRC) torque screwdriver after a bunch of stripped threads in the 5 - 7Nm range at a place i used to work. The wrench was used properly (no leaning on it and passing it's 'breakaway point', anyone caught putting it away under tension was made tea boy/dogsbody for the next month etc) but due to it's size gave absolutly no feel in use at the lower end of it's range. The Roebuck screwdriver didn't 'break' as gradually as say a Britool but IIRC far more notice that you'd reached the setting than many of the cheapies