1. Kurapa kwepamusoro kwesiraidhi njanji: Izvi zvinogona kuvonekwa neziso rakashama. Iwe haufanire kuteerera kune dzakawanda nyaya dzekutengesa, unogona kuzvinzwisisa zvakajairika.
2. Slide njanji chimiro uye zvinhu: Tarisa kuchinjika-chikamu ukobvu hwesimbi zvinhu zvesiraidhi njanji uye chimiro chayo, kunaka kwenjanji inotsvedza iyo inowanzo shandisa akawanda mapurasitiki haina kunaka seyose-simbi inotsvedza njanji.
3. Specific gravity: kazhinji zvinoreva huremu hwehurefu hwakafanana kana vhoriyamu unit, apa kureva huremu hwenjanji yemasiraidhi yemhando imwe chete (senjanji mbiri).
4. Kushanda: Paunongotambanudza njanji yakaderera, unogona kunzwa uremu, simba, zvichingodaro.