General 790-8 Plumb Bob 8 Oz 4 Inch Nickel-plated Steel

Product Description

The GENERAL 790-8 is a steel plumb bob used to establish true vertical reference lines on jobsites. The hex body measures 4 inches in length with a 7/8-inch diameter and weighs 8 ounces, giving it enough mass to hang steady in light drafts. The body and tip are both machined from steel and finished in nickel plating to resist corrosion and wear. The tip is fixed and non-replaceable, keeping the design straightforward. Plumbers, electricians, carpenters, masons, and general contractors use plumb bobs whenever a reliable, tool-free method of establishing a vertical plumb line is needed.

This plumb bob suits residential and commercial construction tasks where a quick, accurate vertical reference is required. Common applications include laying out drain lines, locating ceiling anchor points directly above floor marks, aligning partition walls, and transferring layout points from floor to ceiling. The 8-ounce weight is appropriate for standard indoor work and moderate building heights. It is used by licensed plumbers, electricians, and finish carpenters as a basic but essential layout tool.

Key Features

• Steel construction with nickel-plated finish for corrosion resistance
• Hex body shape provides a secure grip and prevents rolling on flat surfaces
• 8-ounce weight delivers stable hang and accurate plumb line reading
• 4-inch length with 7/8-inch diameter suits standard layout tasks
• Fixed steel tip maintains consistent point geometry over time

Compatibility

Designed as a general-purpose plumb bob suitable for standard layout and reference work in plumbing, electrical, carpentry, and masonry trades.

Installation Notes

Attach a plumb line or string to the top loop and allow the bob to hang freely without contact with walls or other surfaces before taking a reading. Keep the work area free of air currents when precision is critical, as even light drafts can affect the hang. No power tools or trade licenses are required for use, but proper tie-off technique ensures an accurate vertical reference. Store the bob with the tip protected to preserve point accuracy.