The K&E Keuffel & Esser Green Tru-Point Lead Pointer Sharpener 58-0510 3516 is a drafting tool made by the renowned brand KEUFFEL & ESSER in the United States. This sharpener, designed in the 1930s and still manufactured now, is a precision tool for sharpening lead pencils used in drafting and engineering. With its unique green color and brand heritage, this lead pointer sharpener is a valuable collectible item for enthusiasts of vintage drafting tools.