Mystery Object ... This one has me beat

My brother asked if I could identify this ... but I failed

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It’s made of Brass [or possibly Bronze] and was found on a School Playing Field in the 1960s

Currently doing good service as a door-stop ... but what was it ?

Any ideas ?

The stamped number is R2019 ... but that got me nowhere.

MichaelG.

Too easy. It's a javelin gauge.

At my school we used to sneak round a corner and throw them at a wooden door. Never occurred to us someone might open it! Stupid boys...

Dave

Thanks, Dave

I’ve chucked a few javelins ... or maybe it was the same one every time

but never seen a gauge

MichaelG.

This component isembeded into a cement base( it is in the picture upside down) the threaded hole will have a support of some sort being used by a surveyor.

I have seen several different kinds and have a couple I chop chop up for small items I make.

So my £ worth it is a surveying marker.

Clive

Oh dear ... I’ve already told my brother the answer that Dave gave

What with him now being one of those authoritative Moderator types

MichaelG.

Hi, Clive may well be correct, I was wondering about the threaded hole. The company I used to work for many years ago had large heavy concrete blocks cast into solid stable ground in parts of the exhausted quarries, with a bronze plate with a pin sticking from it and surveyors used to come every six months or so for several years to check any subsidence of the land surrounding the old quarries. looking at the rule, the round disc part is about the size these embedded bronze plates were.

Regards Nick.

Regarding the ‘threaded hole’ ...

Here is the first photo that he sent [before I asked for dimensions]:

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There are two holes ... very poorly positioned relative to the cast features.

I had therefore assumed them to to be part if its history, rather than part of its design.

MichaelG.

Yes I know this is a segway... assuming the part is a survey mark

It's Been a while since I posted on this forum. The past couple of years have been very hectic.
Next Wednesday we pick up the keys to a new house. After 38 years in one house we are moving to the hills about a 45 minute drive from Melbourne.

I wish to build a new shed and in order to do so the council requires survey, I was on site when this was done in order to discuss the location. And yes the EPOXY CNC mill post on this forum will continue when the shed to house it is built.

A Land survey starts not at your property but at the known reference points in the area. One of those points was in a council field nearby, about a foot below the grass! Using the very accurate GPS station that surveyors use he had no problem locating it. The surveyor told me that there are many of these hidden reference marks around the city. The importance of the mark determines how it is founded, the more important ones may sit on hidden but massive concrete foundations.

Promotion to Moderator made me instantly more intelligent, knowledgable and wiser than other men! Comedian too...

Looks like one of those things they sell in kitchen shops to measure out portions of spaghetti.

Rod

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Duly noted, Dave

Brother and I both spent some time last night looking at stuff like this: **LINK**

https://www.getrasport.com/out/media/englBedienungsanleitungSpeermessbox.pdf

MichaelG.

In older parts of the UK we often have benchmarks, typically what looks like a 'WD' arrow but usually with a horizontal line above.

Re. bench marks. there are a lot of them around here in Medway. Chatham and Gillingham.

Goes back to when the area was surveyed by the Royal Engineers to fix lines of sight for guns on the Hoath Artillery postion. and a camp alongside the A2 which had lots of tunnels and embrasures for guns.. ( Later turned into a mushroom farm) but all gone now and made into a business park.

In fact until the late fifties most houses on the Gillingham to Rainham area had a military covenanant to allow demolition in case of an invasion through the Thames/Medway Estuary. My Mother had to pay some money to have it removed. Thiis was because of, 'Line of sight' for the guns.

My Bro. has one cut in the brickwork of his cottage at a place called Sharps green.

Something petroleum industry based, made of bronze to eliminate sparks from impact of other metal objects ?

Going back to javelins, could it be mounted on a post to straighten bent ones?

When I was a skool the javelins were all sorts of shapes, probably 'cos we didn't have one of these.

Hoist with own petard Dave, methinks

DaveD

Interesting information about my own local area.

I had thought that benchmarks were shown on on the OS map but so far as I can see the nearest thing is the "triangulation" point.

I am not absolutely sure but I think that the horizontal mark iis to determine elevation, I have a couple around here that state the hieght. One says, '48 feet'.

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You might find this interesting: **LINK**

https://www.ordnancesurvey.co.uk/benchmarks/

MichaelG.

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Meanwhile ... I would really appreciate it if anyone can find an illustration of something exactly like my brother’s mystery object [complete with some definitive evidence of its purpose].

Probably a piece that fell off the tractor mowing the playing field.