What to measure Tool, Test or Instrument
Tree diameter Diameter tree measuring tape
Tree height (or other large entity) Tangent height gauge
Tree wood quality/growth rate Increment bores
Turbidity Secchi disk, anemometer, stopwatch/meter stick, stream flow meter
Viscosity Stopwatch, calibrated tube, ball, funnel
Volume Graduated cylinder, pipette, burette, volumeter, manometer
Water collecting debris Mantra trawl
Water flow Water flow probe or ball, meterstick, stopwatch
Water quality Dissolved oxygen (kit or titration), pH
Water retrieval at depths Water sampler
Water turbidity Secchi disk
Weight Spring scale, electric scale, balance
Wind speed anemometer