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Rabone machine level

Replacing the bubble

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Arthur Goodwin28/04/2020 19:45:46
41 forum posts
18 photos

img_20200428_171823.jpgHi all

Over the moon when I won this on ebay.

Got it for a tenner, bargain I thought till it arrived today.

The glass phial is cracked and the bubble has escaped.

Tried to source a replacement but everybody seems only to have up to 11mm in diameter.

The Rabone tube has an i. D of 14mm.

Does anybody a, have one theycansell or b, have any idea where to get one from

Thanks in advanceimg_20200428_191319420.jpg

Grindstone Cowboy28/04/2020 19:53:03
429 forum posts
36 photos

I'd be inclined (sorry, not intended as a pun) to make up some tubular spacers and use the 11mm ones.

Or these people might be able to help - no connection, just searched for Rabone level spares.

Rob

Oven Man28/04/2020 20:50:59
avatar
91 forum posts
8 photos

I picked up one of these from Aliexpress in China. Don't know how the accuracy compares with the real thing but better than a broken one.

Peterlevel picture 01.jpg

John Haine28/04/2020 22:30:30
3545 forum posts
194 photos

I think there was an article on baking precision bubbles in MEW in the early days...

Clive Hartland28/04/2020 22:35:11
avatar
2631 forum posts
40 photos

The dia. of the bubble tube can be anything you can get. better if you can get one that has lines etched on it. Mounting a bubble smaller than the tube dia.is easy using some paper made into a sort of concertina form, folding it layer by layer till you get a sliding fit. cap/fill the ennds with plaster of paris making sure that the sealing point is clear and under no pressure from the plaster of paris.

Dennis WA28/04/2020 22:43:50
77 forum posts
5 photos

See also the 2017 thread by Andrew Tinsley

https://www.model-engineer.co.uk/forums/postings.asp?th=129638

John Haine29/04/2020 09:18:55
3545 forum posts
194 photos
Posted by John Haine on 28/04/2020 22:30:30:

I think there was an article on baking precision bubbles in MEW in the early days...

Well, it might be possible to bake one, but I think I meant "make"...

Arthur Goodwin29/04/2020 09:46:56
41 forum posts
18 photos

Thank you guys

Robin King29/04/2020 09:50:27
115 forum posts
1 photos
Posted by John Haine on 29/04/2020 09:18:55:
Posted by John Haine on 28/04/2020 22:30:30:

I think there was an article on baking precision bubbles in MEW in the early days...

Well, it might be possible to bake one, but I think I meant "make"...

That's a shame, I was looking forward to a recipe for 'bubble cake' ......

Andrew Tinsley29/04/2020 09:51:50
1256 forum posts

I can confirm that the paper concertina and plaster of Paris method of repair works very well indeed. I am afraid that I have forgotten the source of the new capsule, but one of the above replies gives a starting point.

The main problem was getting the end cap off without damaging it, putting it back on was almost as bad! It was a force fit on my example..

Andrew.

Andrew Tinsley29/04/2020 09:51:51
1256 forum posts

.

Edited By Andrew Tinsley on 29/04/2020 09:52:32

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