Helpful Conversion Tables

Temperatures

Degrees Fahrenheit ºF = (1.8 x ºC) + 32
Degrees Celsius ºC = 0.556 x (ºF - 32)
ºCelsius ºFahrenheit

Measures - Metric to Standard

ONE INCH
  • = 25.4 millimeters
  • = 0.0254 meters
  • = 0.02778 yards
 "
ONE YARD
  • = 36 inches
  • = 914.4 millimeters
  • = 0.9144 meters
 yd
ONE MILLIMETER
  • = 0.03937 inches
  • = 0.00109 yards
  • = 0.001 meters
 mm
ONE METER
  • = 1000 millimeters
  • = 39.3701 inchs
  • = 1.09361 yards
 m

Weights

ONE TROY OUNCE
  • = 31.1035 grams
  • = 1.0971 avoirdupois ounces
  • = 0.0686 avd. pounds
  • = 20 pennyweights (dwts.)
ONE PENNYWEIGHT
  • = .05 troy ounces
  • = 1.56 grams
ONE GRAM
  • = 5 carats
  • = 0.64103 pennyweights (dwts)
  • = .03527 avoir. ounces
  • = 0.03215 troy ounces
ONE AVOIRDUPOIS OUNCE
  • = .91146 troy ounces
  • = 28.3495 g
  • = .0625 lb.
ONE AVOIRDUPOIS POUND
  • = 453.592 grams
  • = 14.583 troy ounces

Inches to Decimal in Feet(ft)

One inch 1/12 ft 0.08 ft
Two inches 2/12 ft 0.17 ft
Three inches 3/12 ft 0.25 ft
Four inches 4/12 ft 0.33 ft
Five inches 5/12 ft 0.42 ft
Six inches 6/12 ft 0.50 ft
Seven inches 7/12 ft 0.58 ft
Eight inches 8/12 ft 0.67 ft
Nine inches 9/12 ft 0.75 ft
Ten inches 10/12 ft 0.83 ft
Eleven inches 11/12 ft 0.92 ft
Twelve inches 12/12 ft 1 ft

Melting Points — Precious And Base Metals

METAL MELT POINT METAL MELT POINT
24K gold 1945ºF(1064ºC) Copper, pure 1981ºF(1084ºC)
18K gold 1715ºF(936ºC) Nickel, pure 2645ºF(1453ºC)
14K yellow gold 1615ºF(880ºC) Tin, pure 450ºF(232ºC)
14K white gold 1825ºF(997ºC) Zinc 787ºF(420ºC)
Fine (999) silver 1761ºF(961ºC) Brass, yellow 1706ºF(931ºC)
Sterling(925) silver 1640ºF(894ºC) #230 red brass 1877ºF(1026ºC)
Coin silver 1616ºF(881ºC) #752 nickelsilver 1960ºF(1072ºC)

B&S Gauge in Inch & Millimeters

Ga. In. mm Ga. In. mm
00 0.3648 9.266 17 0.04525 1.150
0 0.3249 8.252 18 0.04030 1.024
1 0.28930 7.348 19 0.03589 0.912
2 0.25763 6.543 20 0.03196 0.812
3 0.22942 5.827 21 0.02846 0.723
4 0.20431 5.189 22 0.02534 0.644
5 0.18194 4.620 23 0.02257 0.573
6 0.16202 4.115 24 0.02010 0.511
7 0.14428 3.665 25 0.01790 0.455
8 0.12849 3.264 26 0.01594 0.405
9 0.11443 2.906 27 0.01419 0.361
10 0.10189 2.588 28 0.01264 0.321
11 0.09074 2.305 30 0.01002 0.255
12 0.08080 2.035 31 0.00892 0.227
13 0.07196 1.828 32 0.00795 0.202
14 0.06408 1.628 33 0.00708 0.180
15 0.05706 1.450 34 0.00630 0.160
16 0.05082 1.291      

Circle And Oval Geometry

Pi
  • = 3.1416
Circumference
  • The circumference of a circle is the distance around the outside.
  • Circumference = Pi x Diameter
Diameter
  • The diameter of a circle is the distance across the circle, going through the exact center.
  • Diameter = Circumference x .31831
Radius
  • The radius of a circle is the distance between the center and the outside edge.
Area of a Circle
  • Area of a circle is the amount of surface space that a circle consumes.
  • Circle = Pi x Radius(squared)
Circle vs. Square
  • A circle is .7854 times as heavy as a square of the same size, i.e., the loss in cutting a circle from a square is .2146 of the weight of the square.
Area of an Oval
  • the longest diameter x the shortest x .7854

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