Meet the Clegg Hammer, the golf course tool you didn’t know existed

The Clegg Hammer is a software used within the garden care commerce, and it involves thoughts because the world’s finest prep for the Open Championship in St Andrews.

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Welcome to Tremendous Secrets and techniques, the GOLF.com sequence during which we handpick the brains of the sport’s main supervisors. By highlighting how our course upkeep crews do their commerce, we hope to not solely offer you a deeper appreciation for the vital and revolutionary work they do but additionally give you upkeep ideas you possibly can apply to your little patch of heaven. Joyful gardening!

Have you ever heard of Clegg’s hammer? The title makes it sound like a strength-training assist, a modified put-down grip, or the long-distance champ title.

In actual fact, it is a software used within the garden care commerce, and it involves thoughts because the world’s finest golfers put together for the Open Championship in St Andrews. what Steammeter For inexperienced speeds, the Clegg Hammer is for rebound within the floor: used to measure grass hardness.


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However it is a broad description. For extra particulars, we turned to Mike Richardson, a member of the American Golf Course Supervisors Affiliation, and a professor within the Division of Horticulture on the College of Arkansas.

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Also referred to as the Clegg Affect Soil Tester, the Clegg Hammer takes its title from Baden Clegg, an Australian engineer, who by no means dreamed of the machine with golf in thoughts. “If you happen to’re constructing a home or driveway, an important a part of building is the stable basis,” Richardson says. Clegg’s hammer was initially used to measure the hardness of a highway or constructing earlier than asphalt or basis was laid. The rigidity should exceed a sure stage for the development to be thought of secure.

The way it works

A sledgehammer with a sensor is dropped on its nostril by means of a tube of a specified peak. The machine measures the stopping pace of the weighing hammer. The extra stable the floor, the quicker this may occur. Outcomes are measured with a scale referred to as “Gmax,” which, Richardson says, is much like the G-force {that a} pilot or race automobile driver may encounter.


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grass purposes

Since turf hardness is so vital in golf, it isn’t arduous to think about why a Clegg Hammer may be useful to supervisors. However the machine is extra extensively used to watch stadium security than to examine circumstances on the course. Richardson says there are measurements of stiffness which have been related to the chance of a concussion, “so the fields are routinely checked with a Clegg, or comparable machine to evaluate whether or not the sphere is secure for gamers.”

Accuracy of readings

Richardson says the numbers are correct and repeatable. However in golf, there are a number of variables which have made it tough to set requirements for all sorts of grass. For starters, several types of grass produce completely different readings. The sand utilized in building also can have an effect on hardness, in addition to soil moisture ranges and thatch. even the kind of sand used for the highest decking; The angular grain ends in firmer greens than you get with rounded sand. Keep in mind the truth that elite gamers can handle tough surfaces higher than hacks on the weekend, and you may see why it is arduous to arrange strict tips. Key to session operators is communication. In accordance with Richardson, anybody seeking to measure turf firm additionally must scan their gamers to see in the event that they suppose the greens are too smooth or too arduous and modify their numbers accordingly.

Onerous info about packages

Clegg’s hammer shouldn’t be the one strategy to take beam readings. The USGA has developed a software known as the Tru-Agency that works like a Clegg hammer however prices quite a bit much less. In properties with meager budgets, labor shortages, or each, most supervisors won’t spend time or cash monitoring such numbers. In the end, says Richardson, the pace and bouncy of the garden is generally as a result of “the participant’s perceptions and experiences.” to St Andrews. We do not want a elaborate scale to know {that a} course will play arduous and quick.

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Josh Sens is a golf, meals and journey author who has been a contributor to GOLF Journal since 2004 and now contributes throughout all GOLF platforms. His work has been authored in the very best American sports activities writing. He’s additionally the co-author, with Sami Hager, of Are We Having Any Enjoyable But: The Cooking and Partying Handbook.