Pump drills
Esquema
Jerarquía
Furnishings and Equipment (Hierarchy Name) > Tools and Equipment > equipment > <equipment by process> > drilling equipment > drilling tools > drills (tools) > <drills by form>
Descripción
Primitive drills in which the shaft is revolved by working up and down a bar carrying a cord attached at the center to the upper end of the shaft.
URI original del concepto
Otros términos
- taladros de bomba [es]
- pump drill [en]
- drill, pump [en]
- drills, pump [en]
- taladro de bomba [es]