tag:blogger.com,1999:blog-4717269872457503530.post3769663619096405329..comments2025-12-18T05:23:00.612-05:00Francois Dionhttp://www.blogger.com/profile/10442105466634552900noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-4717269872457503530.post-33784230230508181402013-02-08T12:50:56.210-05:002013-02-08T12:50:56.210-05:00Just a side note, for classroom demos, you'll want to stick to <=5mW dot output. If you don't have a way to calibrate and measure laser output, I'd stick to lasers rated at <=5mW, so no matter the permanent attachment, you will know for sure that you will never exceed class IIIa (in the US - always check your local requirements).Francois Dionhttps://www.blogger.com/profile/10442105466634552900noreply@blogger.com