抄録
With nine different type fog nozzles, discharge capacity, effective range, size of particles, distribution of particles and etc. were measured at the nozzle pressure ranging 50～300psi.
The adjustable type nozzle had the advantage of the nonadjustable type because the former was possible to produce any desirable fog pattern.
We depend on the future development of suitable type nozzles for the experiments of the nozzle pressure more than 300psi.
The fog particles was much smaller size than expected, and it was afraid they were blown off by rising air current at the fires.
