Proportional compass with rapid mapping structure

• Main Authors: CHOU, JUII, BAI, JIE-NI, LIN, YU-SUNG, HUANG, LING-KAI, TSENG, PO-HSIANG, SU, GUAN-TING, TSENG, CHIEN-LING, HUANG, YAO-NAN, HE, ZAI-SHENG
• Format: Patent
• Language: Chinese; English
• Published: 11.05.2023
• Subjects: ACCESSORIES FOR WRITING OR DRAWING; ARTICLES FOR WRITING OR DRAWING UPON; BUREAU ACCESSORIES; PERFORMING OPERATIONS; TRANSPORTING; WRITING OR DRAWING IMPLEMENTS

A proportional compass with rapid mapping structure including a first rod, a second rod, a rapid-detaching shaft, a drawing tool, and three fixing spikes is provided. The first rod has a first end, a second end opposite to the first end, and at least one positioning portion between the first and the second ends. The second rod has a third end, a fourth end opposite to the third end, and a second positioning slot between the third and the fourth ends. The rapid-detaching shaft passes through the first and the second positioning portions and are positioned with each other to connect the first and the second rods, and the first and the second rod are rotated about the rapid-detaching shaft. A drawing tool is disposed at one of the first, the second, the third, and the fourth ends, and the fixing spikes are disposed at another three of the first, the second, the third, and the fourth ends.