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It is well-made and would be perfect if it were only more accurate. For carpentry work it would probably be fine but I do segmented wood turning where one needs very accurate cuts so this was useless for me. I have just returned this item to Amazon. Unfortunately its readings are in error by amounts that vary with the angle read and at worst are almost half a degree in error.
As many have stated it looks as though it is inaccurate but if you remove the laser insert it is dead on.It sticks out just a hair.
but only while the button is held. Definitely NOT something you want to use as a basis for setting the angles of larger precision tools which will be used to make parts intended to fit together, all I expected was to be able to confirm and set the configuration of jointer/router fences and saw blade angles. strange, since turning the unit ON while holding it DOES result in the display reading '0.0'. Then, mysteriously, that "feature" disappeared as some part undoubtedly returned to its proper indexed place within the unit.
Releasing the button, turning the unit off, or waiting 10 seconds (or any combination of the above) results in the unit returning to "normal" behaviour. In the end I can find no way to make the device functional as a measuring tool of any worth, your mileage may vary but I'd suggest against picking one up as paying for shipping (or even utilizing your Prime free shipping and wasting resources for "free") is a waste of precious time. tool is not a deal. As other reviewers have noted, even if zero is zeroed, it seems the readout is not linear across the range which is just as useless. Interestingly, after my swearing at it my girlfriend decided to play with it and see if I'd missed the zero/recalibrate button out of impatience. Even free, an inaccurate (and inconsistently inaccurate).
From power-on the delta between zero (closed) and the readout value VARIES between 2.4 - 2.9 deg; you can set it on a stable level surface, and amuse yourself by watching the apparent effects of gravity-wave distortions from nearby stars. Oh, note the momentary button hidden in a 1mm hole in the bottom is NOT apparently a re-zero. On with description of that, after our break there: as the second reviewer here was playing with the tool, it was noted that rotating it along the long axis appeared to (for a time) change the closed-position readout (which again varies between 2.4-2.9 deg), to the point where it almost appeared to be a digital level. Pick a better tool, preferably a low-cost accurate analog protractor/compass type or an expensive well-engineered electronic one. Doesn't take much space to describe the relevant points here, however I'll go into all the exciting and absurd revelations since they're so far from what a measuring tool should do. either that, or the sensor is faulty.
This wasn't even useful as a creative way to utilize a buggy product, since achieving 0.0 on the readout didn't relate to any angle in relation to the horizon that approximated something useful.
I have a geodesic dome with a gazillion angles to deal with.I had one of those flimsy see-through angle finders that you had to loosen a wing nut, spread the arms, tighten the wing nut and then try to read the angle. A real hassle.All you have to do with this one is match the angle and read the readout.One complaint: it could have a light in the readout.
It has a pre-fed zero which can sometimes be inaccruate due to jerks or falls.That is a disaster. Because i've got a couple of their other products and they rock.I suggest - DO NOT BUY until a major upgrade I was so happy with this electronic protractor that i showed it off to everybody i knew had its use.Until one day, i found that the angles it showed were completely inaccurate.The inaccuracy ranged from 2.5 to 7 degrees.The main problem is that this does not have any 'zero' button, where i can calibrate the device. I could get get better accuracy with an analog traditional protractor.It was a waste of previous money.I've now ordered a Wixey digital protractor.
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