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freeflyfree

Reasons for wearing altimeter on leg strap?

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Australia, for one.

5.1.8. An approved and functioning visual altimeter set to indicate height above the DZ shall be worn on all descents. The altimeter shall be securely mounted so that the wearer can observe it without difficulty throughout the descent. An ASO may authorise an exception to this regulation for specified descents where the delay does not exceed 10 seconds. Such authorisation must be made in writing.
See also 5.9.1 and 5.9.A.3 regarding the use of audible altitude warning devices.

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Here is another possible reason...

From the ProTrack manual:

Experience has shown that when mounting the
Pro-Track next to the ear, different air pressures
induced by head movements may result in
incorrect recordings of the Max speed, the average
speed during the first half of the freefall (1) and the
average speed during the second half of the
freefall (2). To record the most accurate
fall-rates LARSEN & BRUSGAARD recommends
that the Pro-Track is mounted on the lower part
of the leg using the Leg Strap Mount (accessory).

On this part of the body the air flow is cleanest.

Edited to add: that they also have a nice sketch of a guy in free fall...

Scott
Livin' on the Edge... sleeping with my rigger's wife...

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In the UK, also:
Quote

4. INSTRUMENTS

4.1. Altimeters must be worn by all Student Parachutists (other than Tandem Student Parachutists), jumping Piggyback equipment. Also altimeters must be worn by parachutists carrying out planned delayed openings of 15 seconds or more, (other than Student Parachutists jumping Traditional equipment, on their first successful 15 second delay).


I'm not sure this would be a "legal" requirement, but it is part of the ops manual.

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Reasons for using a leg mount:

1. I never forget it.
2. It is never in the way for grips.
3. I hardley look at it since I use the ground as a reference, and my teammates Alti's
4. Others on my group can see it.
5. In the event of a mal when you look down at your handles it is easy to see.

Bad things about it:
1. If you have two rigs you need two alti's...I don't have one on my second rig.
2. Gets scratched.
3. Can't give it to someone who needs one in the plane.
4. Can't use that Alti for Student jumps, or Tandems...So you need one that you can hand mount.
"No free man shall ever be debarred the use of arms." -- Thomas Jefferson, Thomas Jefferson Papers, 334

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It is the farthest point from your eyes you can put it and still have it on your harness.:P

Sparky



Those of us that can still read without glasses don't have a problem:ph34r:
May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view. May your mountains rise into and above the clouds. - Edward Abbey

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Leg-mounted altimeters are easier to read under canopy.



Thats why I've got mine there.

But I have gone on many a jump w/o an alti because of it being on my rig. ie Using my second rig or someone elses.

Johnny
--"This ain't no book club, we're all gonna die!"
Mike Rome

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