Movie Library – Halogen Point Heater, Basic performance Focal length and focus diameter of the Halogen Pont Heater HPH-60/f30 Friday June 19th, 2015 HEAT-TECH info This video is a demonstration to confirm the focus diameter of the Halogen Point Heater HPH-60/f30. Please check the following site for more information. Related page: Examples of PID Auto-tuning of The Halogen Point Heater by the HPH-120 Focal length and focus diameter of the Halogen Pont Heater HPH-18 Focal length and focus diameter of the Halogen Pont Heater HPH-35 Focal length and focus diameter of the Halogen Pont Heater HPH-120/f45 Focal length and focus diameter of the Halogen Pont Heater HPH-160/f40 Heating of wire solder by the Halogen Point Heater HPH-35 Focal length and focus diameter of the Halogen Pont Heater HPH-60/f105 Temperature rising time of HPH-12/f6/12V-20W