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Caliper nomenclature

T

Tiresias

Nordic Pine
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Just came across these and cleaned them up.

Calipers 1.jpg

I have never seen this design (not that my experience is exhaustive) - there is a scale on the top section that translates into the gap between the points - put it at 1 on the top scale, and the points are 1cm apart.

Not very clear in the first photo'. I must try and find something that will make the marking clearer. Oh, metric on one side, imperial on the other.

Calipers 2.jpg

Is there a name for these beasties?
 
combination inside/outside caliper.
there is a pattern name for that style but can't remember it.
 
Direct reading callipers.

Big advantage is that the tips can reach over something to measure beyond it but you get the answer without losing the setting when you remove them. For example, if you were measuring the wall thickness of a plumbing fitting that had a thicker flange around the open end. Or the wall thickness of a turned wooden vessel with a small opening.

Still made - eg http://www.veritastools.com/Products/Page.aspx?p=78
 
Thank you chaps. I knew about the inside/outside bit (otherwise half the scale would be useless), but direct reading. Yip, makes perfect sense.

No idea when I will ever use it, but it is a quite pleasing piece of metal.

Thank you again.
 
I'm intrigued by the way you "just came across" them... It's clearly not just heather and peat around you after all!
 
We don’t have anything as useful as peat up here. We’ve got heather, admittedly. And some deer, hares, tweety things and sheep.

It’s simple enough. My partner’s father died just before Christmas. Worcestershireish way. He was an engineer (mostly electrical, but not exclusively – I believe he designed the brakes on the Intercity 125) and an inveterate hoarder. His garage is full of tools and electrical wiring contraptions that even I can see are wildly unsafe and ghettoish. Imagine the sort of rheostats that Dr Frankenstein might use, just wired up with twists of wire to 13a plug pins.

We’ve been down twice, once to secure the property, and last week for his funeral. All in accordance with the regs, both up here and in England. I scanned some of his tools and took some that appeared portable, recoverable and interesting. We have no children but there is a niece and nephew who may want the things in due course.

Sorry, that’s rather verbose. And too much information.

Oh, and I hate the M6. If you’ve not had a 200m sideways ‘moment’ changing lanes over snow going over Shap, well, you haven’t lived. And 600 odd mile round trip in a Defender is … hmm… tiresome.
 
Ah, thanks. Not an easy job in normal times - you have my sympathies.
 
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