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DIAMETERS OF ALL SUNDIAL WIRES
Please check that the diameter of each wire you order will
fit in the aperture for which it is intended.
The measurements in mm are more accurate than the measurements in inches.
Also, please do not choose solely based on what fits. Please make
sure the gauge you choose is appropriate for the electrical
draw of your device or fixture.
Please note that the parallel wire has two dimensions, height and width, since
its shape is rectangular rather than round.
Twisted wire is measured at its widest point.
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Gauge
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Wire Style
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Diameter
in Inches
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Diameter
in mm
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14-gauge
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Pulley Cord
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5/16"
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8.7 mm
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18-gauge
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Pulley Cord
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1/4"
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7.1 mm
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16-gauge
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Overbraid
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1/4"
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6.8 mm
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18-gauge
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Overbraid
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7/32"
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6.1 mm
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16-gauge
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Twisted Pair
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1/4"
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6.9 mm
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18-gauge
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Twisted Pair
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1/4"
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6.5 mm
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20-gauge
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Twisted Pair
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5/32"
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4.2 mm
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22-gauge
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Twisted Pair
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1/8"
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3.7 mm
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18-gauge
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Parallel
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7/32" wide x 3/16" high
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5.7 mm wide x 4.8 mm high
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12-gauge
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Single Conductor
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3/16"
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4.9 mm
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14-gauge
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Single Conductor
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5/32"
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4.1 mm
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18-gauge
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Single Conductor
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1/8"
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3.3 mm
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DIAMETERS OF PLUG OPENINGS
This table lists the size of the openings where the wire is inserted in the plugs we sell.
Please note the rectangular plug has a rectangular opening, hence the two dimensions.
All the other plugs have round openings.
All of the button plug styles have the same diameter opening.
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Plug Style
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Diameter
in Inches
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Diameter
in mm
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Button
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9/32"
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7.5 mm
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Rectangular
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7/16" x 5/16"
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11.2 mm x 8.4 mm
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Round with Neck
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13/32"
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10.7 mm
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PORCELAIN KNOB
Price: From $0.75 to $6.00
Product Options
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Out of stock. Try a different finish and/or condition.
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A knob is used in knob and tube wiring to allow the wires to be
strung along a wall or ceiling. It is made in two
pieces with two channels between the two for two wires to fit in. The knob has a central nail that anchors the knob to the the wall or ceiling
sandwiching the wires between the two pieces of the knob. Please see our full description of
knob and tube wiring.
Condition
New Old Stock
New old stock knobs have never been used and are in the condition they were in when they were manufactured.
Very Good
Knobs that we classify as in very good condition are used and may have
only very small chips, no marks
other than a tiny bit of dirt, no paint, straight or nearly straight nails.
Good
Knobs classified as good may have
slight chips, some paint, more than a little dirt,
slightly bent nails.
Fair
Knobs in fair condition are still functional, but may have
large chips but no major breakage, and can have paint, significant dirt,
marks, and/or discoloration.
Poor
Knobs in poor condition may have significant chips or cracks but still
have both a top and a bottom and each half still in one piece.
Stuff may be stuck on, and there may be significant dirt, paint, or marks, and
missing nails.
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Price: From $1.50 to $35.00
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