EiscoLabs Economy Spectroscope Tube, Pack of 6

Perfect for teaching and doing simple observationsI recommend making the slit even more narrow by using black tape. By making the opening thinner, you can get better resolution at the cost of overall brightness. Doing this, I was able to see some fraunhofer lines in the sky (reminder - do not ever look directly at the sun)

Cheap, does its job, students really enjoyed them.

works great can see lights perfectly

I received the spectrometers in the time I was told. But they came in with issues. One has the same end on both sides no film sheet. Another has the film sheet, but it is snipped on one end and does not cover the hole. I needed these for a lab today and I bought the least amount possible due to money. I was disappointed I did not get equipment I needed. Now I only have 4 I can use and I have had to cut my lab back. I now have to find another company so I can order more that I don’t have the money to buy. As well as pay over night shopping. #Frustratedteacher.

The item was what I needed for an investigation for my middle school students. They came right away and worked really well.