Abstract: We describe an imaging device for measuring a profile of an object. The device includes a plurality of moveable parts, where each moveable part has a first end to contact an object and a second end comprising fluorescent or phosphorescent material. The device further includes an enclosure to hold the moveable parts such that the moveable parts can move parallel to each other within the enclosure to vary their respective positions according to a profile of the contacted object. The device further comprises a light source to stimulate light emission from the material and a camera configured to obtain an image of the second ends of the moveable parts based on the light emission.

Abstract: An improved D.C. power supply for an emergency locator transmitter ELT mounted on an aircraft that does not require lithium batteries but instead uses conventional alkaline batteries in conjunction with a supercapacitor network to provide a reliable power source even when the ELT that is airborne is subjected to extreme cold temperatures that can affect the alkaline battery operation. Alkaline battery pack with a 12 V output is connected to a supercapacitor network board. The supercapacitors are charged when the ELT is activated ON using the comparator network.

Abstract: An improved D.C. power supply for an emergency locator transmitter ELT mounted on an aircraft that does not require lithium batteries but instead uses conventional alkaline batteries in conjunction with a supercapacitor network to provide a reliable power source even when the ELT that is airborne is subjected to extreme cold temperatures that can affect the alkaline battery operation. Alkaline battery pack with a 12 V output is connected to a supercapacitor network board. The supercapacitors are charged when the ELT is activated ON using the comparator network.