Frequently asked questions

The answers to many commonly asked questions are gathered below. The answers to other questions will be found in the Documentation, or by downloading the evaluation version of Digital Gravelometer and trying it for yourself. If you can't find the answer to your question, you are welcome to contact us via

Q: Why would I want to know the size of sediment in a river?

A: There are lots of reasons. The sediment in a river affects the roughness of the bed, and therefore the rate at which water can move through the channel. The size of the sediment also affects how easily it may be moved and is therefore an important control on the rate of erosion and deposition. Engineers need to know the size of the sediment so they can predict the rate of scour around bridge piers and the rate of sedimentation in reservoirs. Ecologists need to know whether the sediment is an appropriate habitat for aquatic insects and spawning ground for fish. Geomorphologists, Hydrologists and River Managers also need to know the size of the sediment so they can better understand and manage the river environment.

Q: What is Sedimetrics®? What is LUEL? How are they related?

A: Sedimetrics® is a trading name of Loughborough University Enterprises Limited (LUEL). LUEL is the commercial arm of Loughborough University and it owns the University’s portfolio of intellectual property, including that behind the Digital Gravelometer software. Purchases of Digital Gravelometer are made through LUEL and your Software Licence Agreement will be with them.

Q: Is Digital Gravelometer available for any platform other than Windows®?

A: No. We do not currently have plans to release Digital Gravelometer on any other platform. However, we will keep this position under review and may consider supporting alternative platforms if sufficient demand is demonstrated.

Q: Should I purchase an Academic or Commercial Licence?

A: If you will be using the software within a degree-granting educational institution for the purposes of non-commercial academic research or as a teaching tool, you may purchase an Academic Licence. All other users should purchase a Commercial Licence. This includes those within academic institutions who wish to use the software for consultancy work.

Q: I have purchased an Academic Licence and now want to use the software for commercial work. What should I do?

A: Please download an order form and a copy of the Commercial Software Licence Agreement (from the Purchase page). Complete the appropriate sections of both documents (it is not necessary to enter the Site code or MID) and return them with a covering note. You will be charged the difference in price between the two licences.

Q: I have upgraded my computer and Digital Gravelometer no longer works. What is the problem?

A: The activation code with which you were provided when you purchased your licence is specific to a particular machine. Certain types of upgrade will result in the software ceasing to work. Please contact us via with details of the upgrade you performed and we will issue a new activation code.

Q: I have a suggestion about how to improve Digital Gravelometer / have found a bug. Who should I contact?

A: Digital Gravelometer is a work-in-progress and we are constantly seeking ways to improve it based on feedback from our users. If you have a suggestion for how it can be developed to better meet your needs, please let us know by e-mailing Please send bug reports to with a description of how to replicate the problem.

Q: I want to move my installation of Digital Gravelometer to a different machine, but the activation code you provided doesn’t work. Do I need to buy a new licence?

A: No. View the Installation and activation page of the documentation or contact us via for instructions on how to transfer the licence between machines. However, if you wish to run the software on both machines, you will require a second licence.

Q: Can I employ you to collect grain-size information for me?

A: Possibly. Please e-mail us via with details of your requirements and we will get back to you as soon as possible.

Q: I would like to collaborate with you. Is this possible?

A: We will consider all serious offers of collaboration if they coincide with our particular research interests. You are encouraged to review the information linked from the About us page and contact the most appropriate individual. If you are uncertain who to contact you may email us via

Q: I would like some advice on how to design a sampling programme. Can you help?

A: Possibly. We may be able to provide advice on a consultancy basis. Please e-mail us via with details of your requirements and we will get back to you as soon as possible.