Converting
our Metric Sizes to US
There are 25.4mm to 1 inch,
so it's easy to convert any millimeter size to inches by dividing it by 25.4 or
multiplying by 0.0394. To
save you the trouble, we made the calculations for you in the table below for
our most common sizes of crystal. The numbers below are rounded up or down
to the nearest 100th inch and fractional inch.
Also keep in mind, that while
many of our prisms are sold by number-of-inch lengths, most are in fact
manufactured in metric lengths and may vary slightly from the named size by a
few hundredths of an inch. For instance, a 4" prism will usually in
fact be 100mm.
|
millimeter |
decimal inch |
closest
fractional inch |
|
5mm |
0.20" |
1/5" |
|
6mm |
0.24" |
1/4" |
|
8mm |
0.31" |
5/16" |
|
10mm |
0.39" |
between 3/8 &
7/16" |
|
12mm |
0.47" |
between 7/16 &
1/2" |
|
14mm |
0.55" |
between 1/2 &
9/16" |
|
16mm |
0.63" |
5/8" |
|
18mm |
0.71" |
between 5/8 &
3/4" (diameter of a US dime, a penny is 19mm)) |
|
20mm |
0.79" |
between 3/4 &
13/16" |
|
22mm |
0.87" |
7/8"
(a US nickel is 21mm) |
|
24mm |
0.95" |
between 15/16 &
1" (diameter of a US quarter) |
|
25mm |
0.98" |
hair under 1" |
|
26mm |
1.02" |
hair over 1" |
|
28mm |
1.10" |
1-1/8" |
|
30mm |
1.18" |
1-3/16"
(the diameter of a US half dollar is 30.61mm) |
|
32mm |
1.26" |
1-1/4" |
|
34mm |
1.34" |
1-1/3" |
|
35mm |
1.38" |
1-3/8" |
|
36mm |
1.42" |
1-7/16" |
|
38mm |
1.50" |
1-1/2" |
|
40mm |
1.57" |
1-9/16"
(a golf ball is about 43mm, 1.68" in diameter) |
|
45mm |
1.77" |
1-3/4" |
|
49mm |
1.93" |
1-15/16" |
|
50mm |
1.97" |
2" |
|
55mm |
2.16" |
2-1/8" |
|
60mm |
2.36" |
2-1/3" |
|
63mm |
2.48" |
2-1/2" |
|
65mm |
2.56" |
2-9/16" |
|
67mm |
2.64" |
2-5/8"
(size of a tennis ball) |
|
70mm |
2.75 |
2-3/4" |
|
76mm |
3" |
3"
(an average base ball is about 74mm) |
|
80mm |
3.15" |
3-1/8" |
|
90mm |
3.54" |
3-1/2" |
|
100mm |
3.94" |
4"
(the diameter of a soft ball avg's 3.5-3.8" unless you're in Chicago) |
|
110mm |
4.33" |
4-1/3" |
|
120mm |
4.72" |
4-3/4" |
1000mm
(1 meter) |
39.37 |
39-3/8" |
on-line
calculators
metric conversions calculator
Thread
Reference:
IP = International Pipe Standard
M=Male (external thread) F=Female (internal
thread)
| Threading |
Diameter
in Inches, approx |
Notes |
| 4-36
and 5/40 |
3/32" |
the size of
socket keys |
|
6/32 |
1/8" |
|
| 8/32 |
5/32" |
|
| 1/4-27 |
1/4" |
most common
for lamp finials |
| 1/8 IP |
3/8" |
allows wire
pass-through |
| 1/4 IP |
1/2" |
common mid size thread |
| 3/8 IP |
5/8" |
for heavy
mounts |
++++++++++++++++++++++++++
Wire Gauge Reference: (American Wire Standard,
not to be confused with the British standard)
| Gauge |
Size
in inches |
Closest fractional |
| 6/0 |
.5800 |
|
| 5/0 |
.5165 |
approx 1/2" |
| 4/0 |
.4600 |
|
| 3/0 |
.4096 |
|
| 2/0 |
.3648 |
approx 3/8" |
| 1/0 |
.3249 |
approx 5/16" |
| 1 |
.2893 |
|
| 2 |
.2576 |
approx 1/4" |
| 3 |
.2294 |
|
| 4 |
.2043 |
|
| 5 |
.1819 |
approx 3/16" |
| 6 |
.1620 |
approx 5/32" |
| 7 |
.1443 |
|
| 8 |
.1285 |
approx 1/8" |
| 9 |
.1144" |
|
| 10 |
.1018" |
|
| 11 |
.0907" |
approx 3/32" |
| 12 |
.0808" |
|
| 13 |
.0719" |
|
| 14 |
.0640" |
approx 1/16" |
| 15 |
.0570" |
|
| 16 |
.0508" |
|
| 17 |
.0452" |
|
| 18 |
.0403" |
|
| 19 |
.0358" |
|
| 20 |
.0319" |
approx 1/32" |
| 21 |
.0284" |
|
| 22 |
.0253" |
|
| 23 |
.0225" |
|
| 24 |
.0201" |
|
| 25 |
.0179" |
|
Miscellaneous:
Find the diameter of a sphere or cylinder by measuring the
circumference:
http://math.about.com/library/blcirclecalculator.htm
Glass
and Crystal
Standard
Prisms and Pendalogues
Fancy Prisms and Pendalogues
Pendalogue
Selection 1
Pendalogue Selection 2
U-Drop Prism Family
Plug Drop Family
French, Flat or "Christmas Tree" Style Pendalogues
Colored Prisms and Pendalogues
Fruits
Colonial and Star-Colonial Prisms
Spear and Cut Spear Prisms
Tear Drop, Pear, Bubble and Oyster Prisms
Uniform Crystal Chains
Graduated
Crystal Chains
Graduated Crystal Chains with Baguettes
Chandelier Arms
Crystal Balls
Crystal Bells
Glass Bobesches
Hand-Cut Crystal Bobesches
Connector Beads, Rosettes and Stars
Single Beads
Crystal
Spears, Spikes and Finials for Chandeliers
Scrolls, Leaves and Feathers
Crystal Lamp Finials
Rock Crystal
Brass
Bell Canopies & Back Plates
Ornamental Ceiling Canopies
Page 2
Mission Style Canopies or Back Plates
Brass Back Plates for Wall
Fixtures
Brass Chains for Chandeliers
Loops and Hooks, plain and fancy
Tubing and
Seating/Check Rings
Lamp Finials:
Standard, Ornate,
Polished Solid Brass - Openwork &
Oriental
Polished
Solid Brass - Classical,
Polished
Solid Brass - Figural
Solid Brass-Antiqued
Cast Metal from Antique Designs,
Classic Oriental Style Cloisonné
& Faux Ivory
Semi-Precious Oriental Design,
Crystal Finials,
Murano & Glass Finials
Candle
Sockets
Lamp Sockets
Candle Sleeves
Fixtures: Sconces
How to Order
Secure On-Line Order Form
Privacy
click here to convert metric to US
inches, check the IP thread size table & for gauge sizes
Home
Highland
Lighting
In
the Bernheim Mansion
1418 S. Third Street, Louisville KY 40208
(502) 224-5018
fax (502) 212-9186
Call us
Mon-Sat 10AM-8PM (Eastern), Sunday 12PM-6PM, and any other time by chance.
info@HighlandLighting.com
Visa, MasterCard, Discover, American Express
We ship anywhere in the US
and most locations world wide
We have no minimum order, but a first order of $25
is appreciated
Orders under $5 may
incur an additional $3 handling charge
Visit the The Old
Louisville National Historic District on line.
| 
