hand lance

hand lance

[′hand ‚lans]
(engineering)
A hand-held pipe with a nozzle through which steam or air is discharged; used to remove soot deposits from the external surfaces of boiler tubes.
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Grami et al [2] study, study, three types of sprayer control against weeds in wheat in the Ardabil region, three types of canvas with a tractor sprayer, hand lance, and Micro-sprinklers back to the weed control product wheat were compared.
For many years, Hydro Seafoods washed out their Borgoplast insulated plastics fish containers with a hand lance and pressure washer.