Digital Craft Plumb Bob Setter, 400g Magnetic Plumb Bobs, 6 Meters Retractable Line Reel with Magnetic Base for Engineering, Construction

Description

- Called plumb bob, or plummet, works as a vertical reference line, or plumb-line - Used with a variety of instruments (including levels, theodolites, and steel tapes) - To set the instrument exactly over a fixed survey marker or to transcribe positions onto the ground for placing a marker - 6-Meter long string & 14 oz. bob, fits most use; Elastomer-wrapped setter for easy grip - Steel reinforced pin for use with a hammer for overhead setting