Quarton Laser Module VLM-635-27 LPT-10 Red Laser Line Generator (INDUSTRIAL USE LINE LASER)

I purchased two of these from Quarton USA. I purchased a third unit from AixiZ.The units from Quarton USA were as described in the spec sheets and performed very well. The laser line was bright, uniform and narrow (3mm) at thirty feet. The unit came prefocused, sealed with an epoxy filler in a brass outer case. This makes it shock resistant, waterproof and usable in harsh environments. The quartz cylindrical line lens creates a sharp line without the interference pattern that is typical of wavy lenses. The unit is expensive but I think it's worth the money for my uses. It's definitely a scientific/industrial caliber product.The module from AixiZ was so different from the item description that it was unrecognizable. It was nickel plated, focusable and incorporated a cheap plastic wavy lens. The line had strong interference patterns and it was impossible to focus sharply. The line would shift position with the slightest tap. The laser was about 1/3 the brightness of the genuine Quarton unit. The wires came out the back through an open hole and there was no epoxy filling. It was similar to the units available on ebay for $2. When I requested a refund they complied immediately and told me to keep the unit. That told me a lot about how much they thought it was worth.I highly recommend the Quarton USA version but do not recommend buying from AixiZ.

Still trying to get one that works. using for an alignment beam on a press break