Convert rise/run into grade, or convert grade plus rise into run or grade plus run into rise.

NOTES:

• Rise and run can be any units, as long as they are both the same.
• Enter values in any two fields, then click outside the form; the missing value will be calculated.
• To clear the fields and reset the calculator, click in any field.

### Scale Dimension Calculator/Converter

Convert real dimensions to model dimensions and vice-versa, plus convert English to Metric and vice-versa, all at the same time. Dimensions are calculated and converted depending on which value is entered first.

Example 1: To determine what a 40-foot boxcar would actually measure in N scale, select the scale, enter "40" in the Real feet field, then click Calculate.

Example 2: To determine what a 6-inch-long Z scale model structure scales up to in actual feet and inches, select Z scale, enter "6" in the Model inches field, then click Calculate.

NOTES:

• The field containing the starting value will be highlighted.
• You can change the modeling scale after performing a calculation, and it will immediately recalculate starting with the original value entered.
• Real feet and inches can be entered at once, but only real meters or millimeters can be entered.
• To clear calculated values and reset the calculator, click in any field.
 Modeling scale: T (1:450) Z (1:220) N (1:160) HO (1:87) S (1:64) O (1:48) Real feet: Real meters: Real inches: Real mm: Model inches: Model mm:

### Scale Drawing Converter

Do you have a drawing in one scale and wish to convert it to another? Use this converter to obtain the percentage required to enlarge/reduce it. Percentage is calculated as the scale selections are made.

 Drawing scale: 1/2N N HO S O Modeling scale: Z N HO S O Percentage:

### Resistor Decoder

Use this color-based decoder to determine the values of typical resistors. Value is calculated as the color selections are made.

 First band: Brown Red Orange Yellow Green Blue Violet Gray White Second band: Black Brown Red Orange Yellow Green Blue Violet Gray White Third band: Black Brown Red Orange Yellow Green Blue Fourth band: Gold Silver None