Featured Mystery Item??? Please Help

Hi all, I have a mahogany box full of 35 strange brass curves all numbered from 1-18, 2 of the same number on each apart from one (I assume 1 is missing) each curve has one with brass lugs on the ends and one without. The numbered pairs seem to have the same radii. The box and the curves seem 19thc but I haven't a clue what they were made for. I bought them from ebay and they were listed as electrical resistors but that can't be the case, any help would be greatly appreciated.

 

neat !

 

Lol I had a nightmare uploading, I must be rusty

 

I'm sorry I can't, my wife took the photos on her phone before she went to bed but the big photo can be clicked to zoom in if that's any help.

 

Draftsman's tools?

 

A wild guess. They were used to verify the correct setting of machines that made corrugated metal sheet.
Like this only smaller.
https://vintagesteelfenders.com/the-process

 

I think they must have something to do with drawing but I can't find any like it on the net

 

They seem a bit delicate and easy to bend for that purpose, I'm really at a loss until I can find the same sort of thing with a description of what they are.

 

Try 'drafting curves'.

 

Not drafting curves, for aerospace anyway.

Possibly scaled boat draughting. Toralky WAG.

 

The problem with all the drafting curves is that all I have seen lay flat on the paper and are not designed to stand.

 

I don't know but I keep thinking they would be good for moldings, ogees etc.

 

Is there some way they could be used with something like a fret saw? Or a router?

 

Someone will probably know. I was thinking along the line of being able to check or scribe the shape. Kind of like this modern adjustable one.

 

I'm with Misc on the WAG! Definitely looks like a wooden "scale" assembly box to house them in, too.

 

I'm thinking they must have been used for some sort of curve gauge but trying to find the same design elsewhere is proving harder than I first thought.

 

I'm sure the box is original, interestingly the box might be a clue as to what they were used for. The box is very dirty and smells of coal tar, like the hands that touched it or the environment it was in had coal burning nearby?

 

They look like those spacer things you see in the back of picture frames,wich are a pain to take out .

 

What say you?? Wavy machinist parallels..........
https://www.ebay.com/itm/MACHINIST-...Swiss-Made-Wavy-Parallel-Blocks-/192330316409