Leḥsab n imeqqranen n yiwen n usqif n tmeẓẓuɣt

Leḥsab n yiwen n usqif n tmeẓẓuɣt

Ttxil-k sken-d lqidar ilaqen.

H - Taɣzi n tesraft
D1 - O.D.
D2 - Taɣect n daxel
C - Amḍan n isurifen
Z - Taɣect n usurif
A - Taɣmert n tuzzya n tesraft

amnir

Tiɣzi n tɣawsiwin deg tɣawsiwin n tmeẓẓuɣt ur ilaq ara ad tili ddaw n 80 cm.
Ilaq ad yili lqedd n tmeẓẓuɣt deg uḥric alemmas ma ulac 20-25 cm, deg uḥric ameqqran - ur yettili ara ugar n 40 cm. Laɛmer n tɣawsiwin n tmeẓdiyin n tmeẓdiyin yezmer ad yili meqqer ugar n laɛmer yettwassumren i tmeẓdiyin n tmerrit. Tiɣzi n tɣawsiwin n tɣawsiwin n tɣawsiwin n tɣawsiwin n 16 cm, i tɣawsiwin n tɣawsiwin n tɣawsiwin - 18 cm.

Deg umkan anda yettḍeggir uḍar, ilaq ad yili uswir n tmeẓẓuɣt n tmeẓẓuɣt azal n 25-30 cm, ɣef tlisa - ma ulac 30-35 cm. Aḍris-agi n tɣerɣert ad yili d ayen igerrzen aṭas.

Dimensi n step n spiral.

h - Tuɣzi n usurif
W1 - tehri n usurif deg uḥric wessiɛen
W2 - Tihri d ilem n usurif
α - Taɣmert n uswir n usnulfu