Taianji kompassi lukitusruuvilla, ruostumaton teräs, nopea säätökompassi, geometria piirustus kompassin lyijyillä ala-asteelle

Tästä tuotteesta: 100% metal: It does not have plastic in its construction, it is made of metal only; A lightweight, nickel high quality compass ensures that you use it for a long time. Helppo käyttää: oletko arkkitehti, matemaatikko, insinööri, puuseppä, opiskelija, opettaja, taiteilija, sitä voidaan helposti käyttää hyvällä säätöalueella. The exact compass with the spring bow head: The middle wheel has a compass and a spring to prevent accidental movement of the legs. Adjusting assembly and lock valve: The compass can be adjusted to prevent accidental movement of the legs. Will not get out of your hands. Use this compass to draw the perfect circle. Bring your lead kernel: you do not need to find another pen, you can use the attached lead core directly for four and drawing circles. You will find that the compass is not that complicated to use.