Mafotokozedwe athunthu a rivets akhungu

Mafotokozedwe athunthu a rivets akhungu:

1. Kawirikawiri, pali mndandanda wa 2.4 / 3.2 / 4 / 4.8 / 5 / 6.4.

2. Kutalika kwake ndi 11 mndandanda 6-8 — 8.5 — 9.5 — 11 — 12.5 — 13 — 14.5 — 15.5 — 16 — 18 — 20.

3. Kutalika kwa msika ndi 22-25-30-40-50-60 (mm).

4Ukadaulo wa chitsulo chosapanga dzimbiri cha mainchesi 3.2 ukhoza kufika kutalika kwa 16mm.