Zinc alloy as the main material
The compasses can maintain the same accuracy while appearing lighter and more beautiful
Configure active connection rods
The compasses can be disassembled and movable connecting rod can be installed to draw the maximum radius up to265 mmThe circle of
Install flexible tie rod
The flexible tie rod replaces the traditional press rod, which can be used more easily and quickly while ensuring the accuracy
Fine-tuning roller design
In fast use, the fine tuning roller can be precisely adjusted to ensure speed and accuracy
Moving feet
The foot of the compass can be turned as needed to ensure the accuracy of the compass
Use a blunt safety needle
Primary safety series compasses use blunt safety needles to ensure the safe use of primary and secondary school students
