Lifting the 'points' of conical tents ?

If they're lubricated they must be intended to rotate freely.

If mounted on a post the grease nipple would be inaccessible.

The quick release shackle looks as if it is meant to fit on quite a thin ( 5mm? ) horizontal rod or cable which suggests it wouldn't support anything too heavy.

Some sort of light rigging or antenna seems a good bet.

Oh, hold on . . . Google thinks they may be earrings!

Likely the suspension brackets for patio parasols or perhaps patio heaters?

John P and Robert A – not for any helo i operated on!! Release from helos has, almost by definition, to be pilot/crew controlled. From experience, even that constraint can lead to problems!! Many years ago, a headache-making net of sand-filled ammo boxes arrived unintended and unannounced on what is now one of HM Prisons. In context, perhaps, the underslung load hooks were manufactured by … Hobbies of Dereham!

rgds

Bill

John – possible but , there are some relatively pointy, damage inducing shapes there. I think I'd be happier having them on (e.g) tents (non moving) than helos. Not come across anything similar in 14 years S&R, helo Support or test flying.

rgds

Bill

defiitely nothing to do with surveying equipment, never in 64 years working on that kit have I seen them.

I would think that they are something to do with Antenna hanging to give good overall cover for HF radios. You get tunable lengths of wire and can switch about to get coverage.

Edited By Clive Hartland on 27/11/2018 23:18:04

I have no idea what the items are so I thought I would do reverse image search via Google for this but the site was blocked by my anti malware program as it contained PuPs. Never had that happen before.

"These are programs which don’t really do anything good for you. For example, browser toolbars that clutter your browser, track your web browsing, and show additional advertisements to you are “potentially unwanted programs.” "

regards

They are lifting bosses for Radioactive Containment Vessels. Have they been properly decontaminated?

Drogue shute could be close, but having had a few searches I think it's the swivel attachment for a sea anchor, which will take the form of an open canvas cone and often with only four lines.

Unlike a drogue chute it may be deployed for many hours and needs to avoid twisting the rope.

Neil