Manuals for Harbor Freight Tools Measuring Instruments Model Document 90716 Assembly And Operating Instructions 90783 Operating Instructions 92573 Operating Instructions Manual CEN-TECH 41080 Operator's Instruction Manual Cen-Tech 5645 Assembly & Operating Instructions CEN-TECH 93293 Assembly & Operating Instructions CEN-TECH 94767 Assembly And Operating Instructions Manual Pittsburgh 47256 Owner's Manual & Safety Instructions PITTSBURGH 63655 Owner's Manual & Safety Instructions