First, we designed and built measuring sticks to effectively measure the dimensions of the drains (ideally without spending a lot of time inside the drains themselves), and purchased measuring tapes. However, although our smartphones have on board GPS receivers, we were not aware of a software solution which allowed us to capture lines as accurately as possible, as well as recording the various measurements and observations in a structured fashion.
Kwanza tulianza kwa kuunda fimbo maalum, ili kupata vipimo vya mifereji kwa usahihi (Kwa hakika bila kutumia muda mrefu kuvitengeneza) na kununua tape (futi). Hata hivyo, Licha ya kuwa simu zetu zinapokea GPS, Hatukujua programu yenye suluhisho ambayo ingeturuhusu sisi kuchukua mistari kwa usahihi iwezekanavyo, pamoja na kuchukua vipimo mbalimbali kwenye muundo uliopangiliwa.