337.1nm Home Built TEA Laser:beer: HeNe lasers a'plenty.Plus that nice one in the avatar 594nm Melles Griot HeNe 594nm Trius Engineering HeNe 405nm handhelds (diy) 445nm handhelds (diy) 473nm B&W Tek lab style 488nm.40mW Multi-Line Argon Ion laser:beer:.....(with thanks to Dave) 515nm Argon Ion laser 40mW 532nm lab style 100mW+handhelds (diy) 543nm Melles Griot HeNe 674nm lab style..500mW 808nm 40W FAP diode array Kimmon IK4123R-B Helium-Cadmium laser and matching power supply.(with great thanks to Event_Horizon!)(Non-working head...PM me if you have one or information)