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Today's mystery object

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duncan webster19/09/2018 13:55:25
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2234 forum posts
32 photos

img_3366 (small).jpgBeck of London were into making microscopes, and this looks like some kjid of surveying device, but you can't see through it, there is a plastic? disc in one end as seen in photo. There is a rack and pinion to move the top member back and to, and levelling screws underneath. Anyone got any ideas?img_3365 (small).jpg

David Jupp19/09/2018 14:17:10
695 forum posts
17 photos

That plastic disc has a modern symbol found on power buttons. I'm not sure when the symbol came into widespread use, but my feeling is that the device pre-dates that piece of plastic.

Mike E.19/09/2018 14:18:24
192 forum posts
1 photos

Necessity being the mother of invention, it looks like an attempt at a home made builders level.

Journeyman19/09/2018 14:28:32
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611 forum posts
96 photos

Looks like a 'Dumpy Level' but not sure if all the optics are there. Possibly by J.R. Beck, London, Ltd. (later Griffin & George) !

John

duncan webster19/09/2018 14:33:48
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2234 forum posts
32 photos

David

Why didn't I spot that! I've had a bit of a dismantle and found there is a laser pointer down the middle, obviously replacing whatever was there before, and the level on top is diffenent as well, but I'd still like to know what it was before it was modified, the rack and pinion thing would seem to be of little use in any long range instrument, but then the bottom bit with the 360 degree protractordoen't look like it was originally part of the top bit, the paint is completely different. Perhaps it's the ultimate bitza, a microscope body mounted on an old theodolite base?

Clive Hartland19/09/2018 15:23:28
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2473 forum posts
40 photos

It is more than likely a Drain Laser, there are very few drain lasers in the survey field and all that I have seen are, 'Bitza's in fact my drain laser is made from a modified projection laser. It reaches out about a half mile.

Clive

Michael Gilligan19/09/2018 15:33:39
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14023 forum posts
609 photos
Posted by duncan webster on 19/09/2018 14:33:48:
Perhaps it's the ultimate bitza, a microscope body mounted on an old theodolite base?

.

yes

MichaelG.

Neil Wyatt19/09/2018 16:10:39
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Posted by David Jupp on 19/09/2018 14:17:10:

That plastic disc has a modern symbol found on power buttons. I'm not sure when the symbol came into widespread use, but my feeling is that the device pre-dates that piece of plastic.

That was my first thought as well!

It's clearly a 21st century facsimile and not ancient at all

Neil

Michael Gilligan19/09/2018 16:37:48
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14023 forum posts
609 photos

I haven't found a picture of the London Model 15

... It's probably the incredibly scarce one devil

But others in the London range are included here: **LINK**

https://archive.org/stream/beckmicroscopes00beckuoft#page/n0/search/london

MichaelG.

Jon Lawes19/09/2018 16:46:01
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325 forum posts

Best treat with care then! As LASER operators say, don't ever look into the beam with your remaining good eye.

Robert Atkinson 219/09/2018 17:53:09
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367 forum posts
21 photos

It's a collection of bits, a tribrach, microscope tube with rack, bubble level and laser pointer. The collar holding the laser in is machined so not a complete bodge. I can see puutong a laser on a tribrach to level it but the microscope horizontal "translation" does not make much sense.

Robert.

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