REMOVABLE COMPASS ENHANCING AVAILABILITY AND EFFECTIVENESS BY DRAWING CIRCLE OF DESIRED SIZE ACCORDING TO THE LENGTH OF LETTER

摘要

PURPOSE: A removable compass is provided to easily adjust numerical values by performing functions of the compass when a pair of the removable compasses are installed on a measuring ruler, and to improve portability and stability of the removable compass.;CONSTITUTION: A removable compass comprises the following: a measuring ruler(1) used for adjusting the length; a first compass main body(110a) with writing instruments and attached on one side of the measuring ruler; a second compass main body(110b) with a compass needle portion(300) and separated from the first compass main body with the constant distance on one side of the measuring ruler; a first removing button(120) attaching and detaching the measuring ruler; a second removing button(130) attaching and detaching the writing instrument and the compass needle portion; a fitting groove capable of inserting the measuring ruler on the compass body; and a first penetration hole on which the writing instrument or the compass needle portion is fixed.;COPYRIGHT KIPO 2010