I need the altimeter to be absolutely precise at least in the first 100 ft. Will it fit this requirement?
247611
No. It is definitely off by a hundred feet or 200 with each reading. My coworker and I are both fire fighter who bought the watch for elevation while doing weather on fires and from our GPS readings the elevation is approx. 100-200 ft off each time.
247612
If you look for precision, this is not your best choice. I have three other altimeters and this one is the less accurate, by far. Maybe a Suunto us a better option
247613
My house is at 500ft. The watch reads 1457. I haven't calibrated it in a while but the temp is the same as the last time it was calibrated. It's not what you want.
247614
I went sky diving last week and I have a altimeter for my shoot and they were very close with in feet
247615
If you need precise then you need to spend alot more money. This thing will vary over time over about 25 -100 feet. Here in colorado elevation is more important than population so most of our maps are marked very accurately. Checking it against these measurements the watch is usually off. Just so you know your looking at a no name watch that has features that most mid range watchs dont have. Maybe get a Garmin!
247616
Nope, bought this watch and return it immediately everything about it is substandard
247617
I m not sure about the first 100 feet. But I m sure its not precise. By moving.the watch up and.down a bit it shows few feet changes.
2084479
The accuracy of the unit is 2.5m 2D rms, altitude is a little bit less accurate, typically around 3-5 meters. It will depend on the GPS signal quality and DOP numbers. You can use the UltiMate GPS app to determine the accuracy: press on the "i" button and it will come up with a screen that has DOP numbers and the accuracy that goes with them.Roger Koumans, Emprum LLC
305083
I'm not sure of the range, but with the power output adjustments, and proper location of the transmitter (relatively high location reference to the receivers) I think you will obtain 100 feet with no problem.
2259064
It does work. Needs calibration when new, but this just involves rotating the watch several times. I would not recommend it for precise measurements, but good enough for casual hiking. If you need serious guidance a precision compass is a better choice.
1799821
The effective range for this device without any obstructions should easily reach 50ft at full strength. I have personally tested it at a range of 25ft without any interruptions in movement or degradation to it's precision.
1494238
Yes, the device has at least a 500 ft. min., range scale, so yes you can accurately fins another spot 700 ft., north or south, east, west, etc... from were you are. The GPS will get you with-in a reasonable distance of the spot. (ie: 10 ft or so).
1949176
As long as it reads 300 to 400 outside it gives me confidence that it is fairly accurate. And it Alway has stayed in that margin outside. In a dark room you can see the infa red pulse every few seconds and seam to adjust corispodingly. Hope that helps.
2235997
I doubt that it is "accurate" in terms of being calibrated to any significant extent. I just line the up the disk to where I want it and it is very close to my floor pumps reading. I just use it to finish my ride if I get a flat. If I'm within 10 psi I'm happy enough to get home.
1588848
I would not trust it beyond 100 to max 150 yards. Appears that it gets a bit distorted. In my oppion I would keep it less than 100 yards. Mostly for safety reasons.
1672303
You can but keep in mind the accuracy is not survey quality. Best accuracy I've seen with it is +/- 10 feet.
1680384
I can only state that it gives very accurate readings right where you are holding it. For down range - I would think at least the wind could vary.
184029
The 301 gives elevation info while tracking sats...it does not have the altimeter function like the 401 however the sat elevation is very accurate. Hope this helps.
2193672
What the manual is saying if you calibrate this scale at say 100 ft above sea level and than use the scale at 10,000 ft above sea level you will need to recalibrate the scale.
644715
It should work, but will be right on the edge. Mine begins measuring distances between 26-28 ft.
1805877
yes, absolutely, the range will vary depending on terrain from one hundred meters to 2 or 3 kilometers
562727
You can call the rinnai factory tech and he can run you thu how to adjust for altitude but it would be better to have a licenced mech. who has the tools and the know how. I am licenced and put one in at 8400 ft but I did not have the gaugeto check it out. you need a dual manometer and the only person who has one is a specialist.
402130
If you are talking about 300 meters. I could not answer that question. Mine is set up for 100 yards which is plenty good in the state of Indiana. It also has a knob for each 100 yards to adjust after the 100 yards by twisting it 1 time for each increment after the first 100 yards. Seems to be fairly accurate for the price. Overall deceit value.