Ngā Whakawhiti Wera Pereti Rere Whakamuri
Te kaupapa mahi o te Whakawhiti Whakamuri Rererangi Hau ki te HauWhakawhiti Wera Peretis:
| E rua ngā pepa konumohe e tata ana hei hanga i tētahi awa mō te rere o te hau hou, te hau putanga rānei. Ka whakawhitia te wera ina rere whakawhiti ngā awa hau hapa, ā, ka rere whakahē ngā awa hau hapa mā roto i ngā awa, ā, ka wehea rawatia te hau hou me te hau putanga. |  |
Ngā āhuatanga matua:
1. Te whakaora wera tairongo
2. Te wehenga katoa o ngā rerenga hau hou me ngā rerenga hau putanga
3. Te pai o te whakaora wera tae atu ki te 90%
Te hanga pēhi 4.2-taha
5.Taki kotahi kua whakapikoa
6. Hiri hononga katoa.
Ngā Whakatakotoranga:
| Tauira | A(mm) | B(mm) | Te roa mō ia wahi (C) | Te mokowā whiriwhiri (mm) |
| HBS-LB539/316 | 316 | 539 | Teitei rawa atu i hangaia mō te 650mm | 2.1 |
