3B Scientific U19500 Diffraction Grating Spectroscope 25mm Diameter x 115mm Length

I still haven't mastered this tool but it is well made.

I got this hoping to learn how to use it to identify absorption lines from colored gemstones. It is fun to learn and this device is well suited for it. I still have lots to learn about it, but this thing has kind of become a new hobby for me.

This is a rebranded packaging of the larger "teaching" spectroscope manufactured by Orwin Products Limited (OPL) in England. The smaller version is Colin Winter's original diffraction spectroscope design, now an industry standard, which has been copied by several knockoff factories with varying degrees of quality.This flashlight-sized larger model has generous, bright optics which produce nice crisp and detailed spectra. The only thing it's missing, which would be impossible with this type of design, is a calibration scale. You need to know what you are doing to use this, but it is capable of producing the best results with something you can hold in one hand.

Excellent quality for a pocket-sized spectroscope. Probably use it in a Raspberry 4 spectral analyzer.

Works very well. Easy to use. I like that its small. The price is nice. The only thing I didn't like about it is that it wont work on led lights.

This the cream of the crop.