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Suunto PM-5/360 PC Clinometer

by Suunto

Price: £134.06
Usually dispatched within 3 to 4 days.
Dispatched from and sold by -martinair007-.
3 new from £115.92
  • Precision hand-held clinometer
  • Scales: 0 ± 90°, 0 ± 150 %
  • Conversion table : cosines 0-45 °
  • Measures vertical angles and slopes quickly and easily.
£134.06 Usually dispatched within 3 to 4 days. Dispatched from and sold by -martinair007-.

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Product details

Product Description

Suunto hand-held clinometers are precision instruments used all over the world by surveyors, engineers, cartographers, geologists, miners and architects and many others to measure vertical angles and slopes quickly and easily. PM-5/360 PC : Scales: 0 ± 90°, 0 ± 150 %, conversion table : cosines 0-45 °, optical adjustment for reading

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Most Helpful Customer Reviews on (beta) 9 reviews
45 of 45 people found the following review helpful
Accurate and Tough 10 May 2008
By Dirk J. Willard - Published on
Verified Purchase
I bought this inclinometer because I needed an optical device I could fit in my tool pouch to measure heights in a refinery. This type of environment requires equipment be intrinsically-safe, i.e., unable to provide enough current to cause a fire. This pretty much rules out GPS, etc. Besides, as I explained to a friend once, GPS tells you where you are not how high something is in front of you.

From my field tests I've found this instrument to be accurate to within +/- 1-ft. This is not as good as you would get with a theodolite (transit), which involves a tripod. A single measurement this way would be highly accurate, perhaps to an inch or so but would take a half-hour or so to set up, if you knew what you were doing. If you can live with the accuracy the PM-5 is great for fast measurements.

The Clinometer works best on days when it is partially cloudy. Frequent use, say more than an hour, in bright sunshine, may cause modest headache and eyestrain.

Here's how it work:
1. Measure the horizontal distance first (D). Keep the tape straight.
2. Measure the height of the instrument as you hold it (Ho).
3. Hold the instrument by the brass handle and find the black eyepiece.
4. Choose the best eye that sees close up.
5. Close the other eye.
6. Look for the horizontal hairline.
7. To the right, is % slope (or height in ft at 100-ft); to the left is degrees.
8. Zero with the horizon.
9. Move the instrument to the desired elevation.
10. Open the second eye using it to see the object for which you want the elevation.
11. An optical illusion will bring the hairline in focus in front of the second eye.
12. Adjust the instrument elevation and read the measurement.
13. The best accuracy is with the degrees.
14. Do the math: H = Ho + DTan(angle).

If this review was helpful, please add your vote.
4 of 4 people found the following review helpful
Needs clarity: different models measure different things 15 Jan. 2015
By DH - Published on
Verified Purchase
This is a high quality product--nice workmanship, nice feel, appears to be very precise, and comes with a nice case. Unfortunately Suunto has not provided sufficient information to purchase this product from Amazon.

Here is an excerpt from the Amazon product description:

"There is a large selection of scales to choose from. These include normal linear angle scales, i.e. degrees, gons and mils as well as per cent scales, topographic scales, metric or American and special secant scales."

What the description doesn't say is that different models provide different measurements and different units. There is no way to tell from the product description what your model will measure or what its units will be. Those are spelled out in the user guide, which you get when you order the product.

Here's what the user guide says:

-Models with a 15, 20, or 66 in the name will measure height with a fixed distance scale (15m, 20m, or 66 feet).

-Models with PC in the name measure height from a variable distance using percentage scale.

-Models with S in the name measure horizontal distance with secant scale.

I received the PM-5/360 PC Clinometer, which uses the percentage scale. If you take the measurement from 100 feet, the percent angle translates directly into feet which simplifies the math, so it works out ok. The only other clinometer I've used provided for measurements at both 66 and 100 feet, which would have been a little more versatile for my purposes.

Amazon and Suunto need to clearly spell out what the different models measure, or make clear that they are only selling one model and explain what that model measures, and in what units.
1 of 1 people found the following review helpful
Quality Product 11 Dec. 2014
By Michael - Published on
Verified Purchase
This clinometer is high quality and easy to use. I use it for measuring the height of cell phone towers, and once you get the hang of it, it's easy to do.

If you're unfamiliar this the device, it simply measures the angle at which you are looking. So if you know how far away you are from something, and the angle you look at to see the top of your target, you can get the height.

I've "calibrated" it to known heights of structures, and I usually get within +/- 5 feet. There are a lot of factors at play when doing this: sun, distance from target (as affected by terrain - if hilly, the distance you would measure walking is not the same as a straight line distance), skill of use (it take some practice to get your eyes use to looking through this).
1 of 1 people found the following review helpful
Clinometer 1 Sept. 2011
By Ginger B. - Published on
Verified Purchase
I purchased this product for my son who is in college. He is majoring in Aerospace Engineering. This product helped him in one of his classes(mechanical engineering). The professor told him that no one has come close to giving the correct height of the school flag pole. The closest measurment was within 50Ft. With this clinometer he was able to come within 3 inches of actual measurment. Will encorage college students studying engineering to really look into this little tool that can help them succeed in this field. By the way he got an "A" on the assignment..Good luck to all the future engineers out there.
It's a clinometer, not a compass 3 April 2012
By Jack A. Mckay - Published on
The SUUNTO PM-5 is a clinometer, that is, a device that measures angles of elevation above the horizontal. One application is for measuring the heights of things, e.g., buildings or trees, by pacing off a known distance, then measuring the angle of elevation of the top. Another -- my application -- is for observing whether or not I've got a clear view of a satellite, knowing the satellite direction and elevation. For installation of satellite TV systems, this is a must-have. Is that tree in the way, or not? This device will tell you.

Elementary to use, nicely built, comes with a convenient leash and pouch. For me, as I wrestle with trees threatening to interfere with satellite access, this device has been invaluable.
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