Apparatus for a polarization filter rotator dial

[tryingtolearn1]

Wondering where I can purchase the polarization filter rotator dial equipment? I tried searching online and couldn't find it. I will like to rotate the polarization filter sheets and measure the angle of the rotation but I can't find that equipment online.

I have attached the image below:

 

[sophiecentaur]

What sort of accuracy and spec do you need? I found this on eBay

It's a 'student' polarimeter. Is that the sort of thing you want?

 

[Dr Transport]

https://www.edmundoptics.com/c/polarizer-optomechanics/1327/#

 

[tryingtolearn1]

https://www.edmundoptics.com/c/polarizer-optomechanics/1327/#

I took a look and the polarizers mount are very expensive upwards of 150 USD. Do you know of any other polarizer mounts that are cheaper like less than 30 USD?

 

[sophiecentaur]

I took a look and the polarizers mount are very expensive upwards of 150 USD. Do you know of any other polarizer mounts that are cheaper like less than 30 USD?

You could always make your own mount with a cheap camera polarising filter (linear not circular option) and use a circular, school type, plastic protractor. If you are into DIY you can use plastic PVC plumbing tubing. There is a wide selection of fittings that would allow the tube to be mounted on a board or a laboratory clamp stand. That sort of arrangement would cost the sort of money you're talking about and could give very adequate results with angle measurement accuracy of down to 1 degree, depending on how firm your arrangement is.

In the field of Optics KIT, 150 USD is cheap! IT'S BIG BOYS' STUFF. .

 

[Dr Transport]

In the field of Optics KIT, 150 USD is cheap! IT'S BIG BOYS' STUFF.

You get what you pay for, cheap parts are just that, cheap and no quality.

 

[sophiecentaur]

You get what you pay for, cheap parts are just that, cheap and no quality.

You can do many elementary experiments in Physics without "quality" equipment. School physics exists on what can be snobbishly called rubbish. It can be a terrible waste of money to go for 'the best' if you don't plan to make a lifetime study of a topic.