Isici:

1, ezintathu izitsha eziyisikhombisa fixed (90, 180, 45) nge

2, Ukunemba 1.0mm / Mm

3, Strong-ebambe phansi uzibuthe.

4, Top -Funda isikhungo isitsha for readability ngcono.
5, Non-yonakalise impahla kusiza ukuvimbela ukulimala sufaces isiqedile.

6, Omunye ukulengiswa imbobo

7, Usayizi: 6 "futhi 9" kuyatholakala