Item delivered was a poor quality Chinese product widely available elsewhere for a quarter of the price. Far different from the precision device the advertising had led me to expect. Upon asking for a full refund and return I was offered 15% refund and keep the product which I refused. Then an offer of 30%, then 50% which I also refused. The only way I could get a full refund was to return the item to China, at a cost of more than the 50% refund which made absolutely no sense. So I was forced to accept the 50% and keep the piece of rubbish at twice the cost I could have bought it elsewhere. I just wish I had searched out reviews for this company before buying. It seems my experience is frequently repeated. I suspect it's merely an arm of a Chinese import company which then sells rubbish products through a UK front at vastly inflated prices. Avoid at all costs. I can at least report that they actually did refund my 50% without delay.