How many Lamberts make a Plummer?

10/2/2021

It is useful to know how fast or slow a lawn is. For major competitions, it is vital. As we all know, speed affects your shot, and may affect your choice of tactics. But how do you measure speed?

The traditional method was to time very precisely a ball struck from the South boundary to North. The time in seconds is the 'Plummer' rating, where 1 second = 1 Plummer. Tricky -- far trickier than any of our coaching tests!

Michael Bowker has come to the rescue by making a 'Lambertometer' after discussion with Duncan and Richard. The Lambertometer is a simple device for measuring the speed of a croquet lawn.  In essence it is a 4 foot ramp raised 1 foot, down which a croquet ball is run.  The distance the ball runs gives a measure of lawn speed. So, for example if the ball rolled 16 feet, this would be a lawn speed of Plummer 12.

Thank you, Michael, for yet another helpful practical contribution to the club!

Richard Peperell

8 Comments

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Email us: enquiries@hwcroquetclub.com

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Hazlemere Recreation Ground, Amersham Road, Hazlemere, Bucks, HP15 7QW

The Recreation Ground is on the A404. If approaching from the north, travel 400m south from the Hazlemere double roundabout, slow down at Holy Trinity Church on your left and look for a small road on your right with Croquet Club and Recreation Ground signs. Coming from the south (High Wycombe) direction, we are about a kilometre north of the Royal Grammar School.

Alan Clark

14/2/2021 11:51:07 am

Well done Michael, I like the precision of your, has to be saids, stylish lambertometer. Now you can wait for the croquet world to beat a path to your door. Only concern is why you just made a south to north one. Shouldn't you make a matching one that goes from north to south?

Michael Bowker

14/2/2021 11:22:06 pm

A Lambertometer pivots around a skewer close to its foot so that readings may be taken in several directions. Please provide your own compass if a specific direction is required.

Geoffrey John Brook

15/2/2021 12:25:02 pm

So simple. However, why not put a spring loaded plunger at the top end so we could play a form of bagatelle as well as croquet,using the sprinkler head sockets as aiming points?

Roger Bowman

15/11/2022 02:44:53 pm

An elegant device. Perhaps it could be used to measure lawn trueness, after incorporation of a laser pointer?

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29/5/2023 09:23:08 am

In conclusion, determining how many Lamberts make a Plummer is important for those involved in the field of lighting design. By understanding and applying this concept, professionals can ensure that their lighting designs are accurate and effective. While there is no simple answer to this question, with the right tools and knowledge, it is possible to make informed decisions about light output and intensity. As technology continues to evolve, so too will our understanding of Lambert units and their applications. We encourage all professionals in this field to stay up-to-date with the latest research and advancements in lighting design. Let us continue to explore the possibilities that Lambert units provide!