Does anyone know where I can source the components used in digital vernier calipers?? parts can be seen here: http://www.aylj.com/en/expertise_stator.htm

Any help would be greatly appreciated.
Thanks,
Ben.

 

Which components? I can see two PCBs and a some microcontroller under an epoxy blob.

 

Does anyone know where I can source the components used in digital vernier calipers?? parts can be seen here: http://www.aylj.com/en/expertise_stator.htm

Any help would be greatly appreciated.
Thanks,
Ben.

How do you want to use them? Vernier calipers are highly integrated systems, they don’t really have discrete components that can be reused.

 

Essentially, I want to build a scaled up caliper; its is an instrument for measuring the length of bones, the analogue version looking like the picture (here: http://www.aylj.com/en/expertise_stator.htm). I have seen a homemade digital variation of this, so know it is possible to make.

The picture of the PCB is showing both sides of the board.

If I were to make a one off, I would probably buy a vernier caliper, tear it down for the PCB and try and find a 'cut to size' stator grid. However, there is a possibility of making a few, so if possible would like to find a supplier.

 

correct link for picture here: https://collections.nmnh.si.edu/media/?i=10483361&w=12000

 

do you really need to bulid it by yourself? I would point you to have a look at DRO aka digital readout systems for milling machines and lathes. That is basically the same thing, but made for longer travel.
for example https://www.ebay.com/itm/Digital-Re...hash=item2ce640484d:m:m1xIq9tsx41l-1K8lFzQLug or https://www.ebay.com/itm/0-500mm-Di...hash=item3d77f477e1:m:mI77hjsx_JoEHEcEfPjBD-Q

 

Essentially, I want to build a scaled up caliper; its is an instrument for measuring the length of bones, the analogue version looking like the picture (here: http://www.aylj.com/en/expertise_stator.htm). I have seen a homemade digital variation of this, so know it is possible to make.

The picture of the PCB is showing both sides of the board.

If I were to make a one off, I would probably buy a vernier caliper, tear it down for the PCB and try and find a 'cut to size' stator grid. However, there is a possibility of making a few, so if possible would like to find a supplier.

I would suggest you look into inductive linear sensors used in industrial automation. Very accurate, if not cheap, and with various ranges.

https://www.zettlex.com/products/oem-linear-position-sensors/

There are also pre-packaged versions which might be useful, just search around.

 

Thanks for your suggestions Kubeek and Yaakov, very much appreciated!

 

Digital calipers are also available in XXL, eg from Mitutoyo

But admitted, the price rises steeply from the 'standard' size 6 inches / 150 mm.

 

You can get longer scales. This is one example. You do not say what length you need to measure.

Les.

 

The second question is how accurate do you need to be? Range, resolution, and accuracy are the three parameters that tell if you need a micrometer or a yardstick.