For example, a slide chart circa 1970 from Miss Clairol shows the proper formula for hair color. "Somebody did all the math, did all the pre-calculations, printed it on this, and now I have those ...

HARRISBURG, Pa. (WHTM) — Truth be told, most of us probably never thought much about slide charts and wheel charts, much less what it would take to be certified the world’s top collector of ...

James Edward Johnson, 68, a Chicago area executive, was founder and chief executive officer of American Slide Chart Corp. in Carol Stream. Services for Mr. Johnson, a Wheaton resident, will be ...

Graphic Calculator Co. Description This circular slide chart consists of two plastic discs of equal size held together at the center by a metal rivet. The bottom disc is white, with a green ...

Call out a number. Sometimes the best chart is no chart at all. If a certain figure conveys your key message most clearly on its own, show just that number — huge — on the slide.