Ktebo compass primary school students 10-piece set, protractor, two triangle rulers, 15cm straight ruler, pencil, eraser, replacement core, one-push opening and closing case

Features

• 【push to open and put in/out by yourself】there is no hasp on the case, you can open it by pressing the edge of the lid.the lid is not easy to open while closed, so it is designed to prevent the contents from coming out when you carry it.the top lid is transparent, you can check whether the 10 points are in place even when it is closed.there is no fastener that needs to be removed with force, so it is easy to open and close without the help of adults before class
• [10 pieces used in geometry lessons are collected together] the contents are a protractor, 2 triangle rulers (45 degrees and 30 degrees and 60 degrees), a 15cm straight ruler, 2 compasses, a pencil, an eraser, a pencil sharpener, and a replacement lead case (including 2 leads) , a total of 10 pieces.the tools used in drawing circles, measuring angles, and drawing straight lines are collected in one case, including a set of triangle rulers
• [draw a circle with a pencil or a replacement core]the compass comes in two pieces.one is a type that uses a pencil held in the hand on a silver metal piece, and the other is a type that uses a replacement core, and the replacement core is included in a special case.the parts of the compass body are zinc alloy.before drawing a circle, make sure that the opening width has not shifted, and then slowly rotate while pressing the needle as the center.
• [carry the case to school and cram school]the outer size of the case body is about 17.8*10cm (excluding the handle ring), which can be carried to school, home study and cram school.the case is made of resin, which may break if dropped or crushed hard.when putting it in a school bag, please put it in a position that will not be sandwiched by heavy objects such as textbooks
• [about the handling and use of the needle tip]the needle tip of the compass is sharp.please confirm the direction before use, and put it back to the case after use.when you use it for the first time, an adult should explain how to use it nearby.this is a learning set used in primary school mathematics, and is not suitable for the use of drawing precise figures in the workplace