![]() ![]() This plumb line is important for lining up anatomical geometries and visualizing the subject's center of balance. ![]() The device used may be purpose-made plumb lines, or simply makeshift devices made from a piece of string and a weighted object, such as a metal washer. Students of figure drawing will also make use of a plumb line to find the vertical axis through the center of gravity of their subject and lay it down on paper as a point of reference. Ī plumb bob may be in a container of water (when conditions are above freezing temperatures), molasses, very viscous oils or other liquids to dampen any swinging movement, functioning as a shock absorber.ĭetermining center of gravity of an irregular shape HUGE VINTAGE ANTIQUE BRASS PLUMB BOB 8.5LBS £8.50 5 bids £5.95 postage 2d 22h Vintage Solid Brass Plumb Bob 8oz/240g Large 4. The early skyscrapers used heavy plumb bobs, hung on wire in their elevator shafts. PLUMB BOB ANTIQUE BRASS OLD LEVEL TOOL SOLID 1900S 672 GRAMS ROUND SHAPE Pre-Owned 39.99 Buy It Now +18.00 shipping from Portugal Sponsored Vintage BRASS 4.25' SURVEYORS PLUMB BOB 6 0ZS with STEEL TIP 20.00 0 bids 3d 5h left (Thu, 12:12 PM) +6.00 shipping Sponsored Vintage 5-1/4' P.B. Vintage Plumb Bob Antique Tool Pre-Owned 14.99 aplquest (6,331) 99.9 Buy It Now +7.99 shipping Sponsored K1272- Antique Stanley Brass Reel Type Plumb Bob 8 oz Pat. A variation of this tool has the plumb line hung from the top of an inverted T shape. An A-frame level with a plumb line hung from the vertex was also used to find horizontal these were used in Europe until the mid–19th century. However, if they are mounted on a suitable scale the instrument may also be used as an inclinometer to measure angles to the vertical.Īncient Egyptians used a plumb line attached to the top outer part of a tool resembling a letter E when placed against a wall, the plumb line would indicate a vertical line. A plumb bob, plumb bob level, or plummet, is a weight, usually with a pointed tip on the bottom, suspended from a string and used as a vertical reference line, or plumb-line. A plumb bob and line alone can determine only a vertical reference.
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