the world > matter > light > artificial light > an artificial light > torch > [noun] > electric torch > shaped like a pen or pencil
pencil flashlight1929
penlight1930
pencil flash1935
pencil torch1937
1929 ‘E. Queen’Roman Hat Myst.iv. xxii. 307 Barry examined them..by the same pencil flashlight—a tiny streak of illumination.
1999 Washington Times (Nexis) 7 Sept. a2 With the help of a pencil flashlight, he used a Wordsworth poem to sound out the words during long prison nights.