After ordering a dynamometer Sodial first time, I waited for delivery 40 days, in vain, and Amazon has repaid me. He had delivered myself in a tobacco shop. The journey of this article is not followed and I think anyone can steal it without a trace. I have therefore ordered a second, it arrived in a week, this time in my mailbox, brought by the postman. After unpacking I found that the clamping handle was scratched, as if the dynamometer had already been used, but I do not have one certainty. The unit is ultra-light (140 grams) it's a little gadget and is thin plastic. I committed the stupidity of it apart to see the inside and I had a hard time back in, because it is a "Chinese" puzzle, this is the case to say and attention soon you separate the two sides held five Phillips screws, all the machinery and other elements of the device fall without warning. We see immediately that this is not high-end, well after my wound a little rough the counter hand now placed himself at least 3 kg instead of zero, for now I'm not close to re-adjust better to disassemble for fear of breaking something because everything seems very fragile. Fortunately, I can anyway correct this offset least 3 kilos, by turning a hand knob in the shape of a quarter circle (left dial). The only metal elements are coil springs 4 laid side by side vertically and it is they that provide resistance up to 130 kg. Curiously there is the space to put between the other two springs 4 ... which should rise to 195 kg resistance if the six were used. I found this by trying dynamometer to seniors with low grip (eg 17 kg of pressure on an electronic dynamometer such as Trailite, more accurate than the Sodial, the needle did not exceed 7 kg over one -C, like bathroom scales that indicate a false weight below 10 kg, but become righteous in the higher weight. Conversely in the more pressure the Sodial was a bit too optimistic, and at the Using my weaker hand I pinched up to 80 kg, while on the dynamometer Trailite it gave only 63 kg for a pressure unabated. Despite these minor flaws, given the low price of the device (6.87), I recommend the purchase because although it lacks a bit of precision when it will tell themselves the strength of your grip and push some to lead to the strengthening (which may still be useful) with a drive to "hand pliers" called "grippers" ... I precisely because it is not mentioned in the description that the needle is stuck at the level where it is brought up when the pressure and that it is the "quadrant" to the left of the screen that allows to put it back on zero ...
