How to Convert Light Bands to Microinches

••• Nordroden/iStock/GettyImages

If you work in the sealing industry, then you're probably accustomed to using optical flats to measure seal face flatness, as that is the only accurate way of going about it. Unfortunately, optical flats are restricted to measurements based on monochromatic light. More specifically, an optical flat allows you to determine the number of helium light bands that encompass a seal face's flatness. The problem which this is that helium light bands themselves are useless measurements -- or at least they're useless until you convert them to inches or microinches.

    Set up an equation relating helium light bands (HLB) to inches (IN). One helium light band equals 0.0000116 inches, or HLB * .0000116 = IN.

    Plug the number of helium light bands into the equation from step 1 to solve for inches. Given 3 helium light bands, for instance, the equation would read 3 * .0000116 = IN, or .0000348.

    Convert the value obtained in step 2 to inches by multiplying it by a million, because one microinch is merely one millionth of an inch. Given .0000348 inches, for instance, the final value in microinches would be 34.8.

Related Articles

How to Make a 3D Solar System
How to Convert Nanometers to Joules
How to Convert Foot-Candles to Lumens
What Astronomical Instrument Measures the Brightness...
How to Calculate Angular Resolution
How to Convert 10 Meters to Feet
Weather Facts About Saturn
How to Write Number Measurement Dimensions
How Can Astronomers Tell What a Distant Object's Temperature...
How to Convert Photons to Joules
How to Calculate Color Temperature
How Are Distances in Space Measured?
How to Convert Lux to Candela
How to Calculate Frequency
How High Can a Helium Balloon Go Before it Pops?
Can You Stand on Neptune?
Does Cold Air Cause Latex Helium-Filled Balloons to...
How to Make a Model of the Planet Neptune
How to Convert Inches & Pounds to Centimeters & Kilograms
How to Convert NITS to LUX

Dont Go!

We Have More Great Sciencing Articles!