Measuring Trapezoidal Wires

Are you saying that each wire is the shape of a trapezoid?

The wire I am using is Trapezoid.

Get a microscope equipped with a camera

or a telecentric lens with frame grabber card and read-out, print-out,

or an old fashioned profile-projector to compare with an enlarged drawing.

RHABE

What is the accuracy you are looking for? I assume it is for the wire lock inserts? You may try to get go/no go gauges?

Else as the previous thread mentions the best is to go for optical/ projector.

The tolerance is within 60 microns. the wire used for making retaining rings. some one advised me for contourgraph, what is this??

A conourgraph uses a stylus to trace a profile of an object. It can display the image on a screen. It allows the user to "pick" points on the screen and print out dimensional data. I have never worked with one that would work to 60 microns resolution.

Some people here think that I like to be snarky, but I don't. While it is true that this forum permits all of us to occasionally vent, it never brings pleasure to me. This appears to be another thread with insufficient information for us to be helpful. I do realize that likely the OP was given a task outside of his field and thus doesn't know what does and does not matter. Now that I've vented, I'll try to be helpful.

You actually have three concerns here.

1. Did the trapezoidal wire manufacturer construct this wire to the manufacturer's or contracted specification? This will require knowledge of this specification. Only then can precise proposed measurements be offered. I suspect that simple micrometer readings at random locations of the height and width of the wire will be sufficient for incoming inspection. I would include doing a sample testing of insulation with a high-pot tester though.
2. During assembly was this done properly? Again without knowing the assembly no precise measurement can be offered. Maybe a bigger micrometer can be used at every layer of winding. Possibly the weight applied per wrap will be sufficient.
3. Will a proper assembly always work? This I believe is the real but unspoken question posed here. I know of no magnet wire fabricator that draws trapezoidal wire. The only wire cross sections I've encountered are circular, square and rectangular. The latter two shapes are for maximum packing of copper in the winding space. I do not see an advantage to trapezoidal wire. So this will likely be a custom order. While some trapezoids can tessellate (fill a space without voids between units) it will not do this at at least one edge of the coil. It will also require an awkward assembly for any geometry I can think of.

In my opinion, if this wire is a trapezoid, you have a booby trap of a project here.

Good Luck,

You need to give more information. Do the wire's dimensions need to be measured continuously or will sampling at a few points on the roll be OK? What material is the wire? What is its size or range of sizes? Can you contact the wire or must the measurement be non-contact? What are the required precision and accuracy? Lots of things are possible, but a problem has to be well-defined before meaningful answers can be given.

I've never heard of a contourgraph; is that the same thing as a profilometer? If so, such a device could be used, but not for continuous checking without building extra hardware.