Turn on the machine and move the grip support assembly to the left until it reaches the end of the apparatus. Put the calibration rod into the machine, resting the right end of the rod against the 60-degree sole plate of the clubhead support. Slide the grip support over until it gently touches the end of the calibration rod, then zero out the scale. Remove the calibration rod when you’re finished. Ensure the clubhead rests against the clubhead support, with the sole touching the 60-degree sole plate. The grip should rest in the grip support. Gently rock the club back and forth to be sure it’s not being constrained and can move naturally. Move the grip support to the right until the butt plate is gently touching the end of the grip. Step back from the scale and read the digital value. If the scale reads 0.0 or less, the length is less than 48.0 inches (122 cm) and conforms to the club length standard. If the scale reads greater than 0.0, the length is greater than 48.0 inches (122 cm) and it does not conform to the club length standard. Such a club could not be used in a professional golf game.
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One-sentence summary -- Calibrate the club length measuring apparatus. Place the club in the apparatus. Slide the grip support until it touches the grip, then read the scale. Determine if the club conforms to length standards.

Q: The first step to cleaning any clear plastic item is wiping away dust, dirt, grime, oils, etc. from the surface.  Opt for non-abrasive materials so that you don’t scratch the plastic surface.  Add a small amount of a gentle detergent, such as dish soap, to clean, warm water. Use a clean microfiber cloth or soft cotton rag (like an old t-shirt).  Paper towels are too abrasive. Wet the cloth thoroughly with the soapy water, and gently scrub the surface with a circular cleaning motion. Rinse the residue away with clean, cool water and dry the plastic with another clean cloth. Commercial window or multi-surface cleaners can also be used to wipe away surface debris from clear plastic.  In some cases, though, they may add further cloudiness and streaks by leaving a film behind.  If you’re cleaning a clear plastic windscreen, for instance, test an small area first to evaluate the results.  Use a non-abrasive cloth like microfiber or soft cotton. You can also make your own multi-purpose cleaner by combining clean water and white vinegar (at a 1:1 ratio) in a spray bottle. Surface cleaning alone will probably not restore the clarity of your plastic item or reduce yellowing.  In this case, instead of avoiding abrasion, you may want to use a mild abrasive to scrape away the surface damage done by UV rays and wear and tear.  Some people find that plain white toothpaste works well; others prefer mixing baking soda with vinegar to make a foamy cleaner with some grit. Or, try mixing baking soda and oil soap (such as Murphy’s Oil Soap) into a thick paste equal or slightly thicker in consistency than toothpaste. In this case, a microfiber or cotton cloth is still fine to use, but you can also enhance the abrasion a bit further by using a woven scouring pad (not steel wool) meant for non-stick or coated cooking pans.  Clean and rinse the surface first. Use a circular cleaning motion with relatively mild pressure.  Think more “exfoliating your skin” and less “sanding down a piece of wood.” Rinse the cleaner away with clean, cool water. Dry the plastic with a clean, soft cloth (with no abrasion this time). Scrubbing away the surface cloudiness of your item may, unfortunately, leave it more vulnerable to UV damage in the future.  Depending upon the importance and function of the plastic item — such as a car headlamp cover or boat windscreen, for instance — you may want to add surface protection to slow down the deterioration process. UV protectants for plastics come in clear-coat sprays and wipe-on waxes.  Consider which application and process is best suited to your needs, and follow the product instructions explicitly.
A: Surface-clean the item with a gentle soap and a soft cloth. Try spray cleaners for surface cleaning as well. Add some grit for a deeper clean. Apply your mild abrasive to the clear plastic. Consider applying a UV clear-coat spray or commercial protective wax.

Article: Your owner’s manual might have specific tips or advice about how to best remove stains from stainless steel.  With these directions in hand, you’ll be able to remove stains in the best possible way. To identify the direction of the grain in your stainless steel object or appliance, look closely at it.  You’ll notice the metal is actually organized into thin strips that all point in one direction.  Unless otherwise noted, clean along the grain of the stainless steel. Use a damp, soapy washcloth to wipe the surface along the grain.  Rinse the washcloth with clean water, then wipe the stainless steel appliance again.  Wipe it with a dry cloth to prevent water spots. Cleaners containing chlorides (including iodine, bromine, chlorine, and fluorine) can cause pitting and damage your stainless steel.  Alcohol, ammonia, or mineral spirits can also hurt the protective layer over the steel surface.  Finally, abrasive steel wool or steel brushes can scratch the stainless steel surface and encourage rust.
Question: What is a summary of what this article is about?
Check your owner’s manual for care tips. Wipe in the direction of the stainless steel grain. Wipe down stainless steel appliances every time you do the dishes. Avoid using cleaning products that might damage your stainless steel.