Ibyumaibiranga:
1. Ibisobanuro byuzuye nibikoresho bitandukanye;
2. Ukuri kurwego rwo hejuru, kugeza kuri 0.1mm;
3. Ubwiza bwubuso bwiza, umucyo mwiza;
4. Kurwanya ruswa ikomeye, imbaraga zingana cyane n'imbaraga z'umunaniro;
5. Ibigize imiti ihamye, ibyuma bisukuye, ibirimo bike;
6. Gupakira neza, igiciro cyiza;
7. Irashobora gukorwa nta kalibrasi.