



Wood Inspection Resistance Drills and Products
IML offers a comprehensive suite of wood testing systems designed for accurate and efficient inspections. Our solutions, ranging from digital measurements to sound velocity testing, provide reliable data on wood quality. With minimal effort, you can quickly identify defects like decay, cavities, or rot using our lightweight drill, sound velocity measurement tool, or fractometer.

Wood Testing Drills
IML-RESI Systems are wood inspection drills that penetrate the wood product leaving resistance measurements that display any soft wood, rot or cavities present in the wood. These tools are great for utility pole inspections, timber wood testing, tree and construction testing.
We offer three types of resistance drills:
- IML-RESI MD300 used for preliminary investigations of wood quality
- IML-RESI F-Series with a measurement way paper strip print-out
- IML-RESI PD-Series with a digital electronic unit
Sound Velocity Measurement
Detects wood cavities, cracks and decay in its early stages including brown and white wood decay. The IML Micro Hammer provides easy and fast wood quality measurements for wood inspection based on the speed it takes a sound impulse to travel through the wood product.


Fractometer
The Fractometer assists in the evaluation of stability and strength of wood using the wooden core extracted with the increment borer. The obtained objective values for the bending fracture moment, fracture angle and fracture energy provide the basis for statements about the bending fracture strength and the compression strength.
There are two types of Fractometers offered at IML:
- Fractometer I measures the bending strength
- Fractometer II measures both the bending strength and compression strength
IML Annual Ring Analysis
The IML Measuring Table helps you evaluate the annual rings of wooden cores and tree discs in a quick and easy manner. The growth behavior of trees provides important information about climatic circumstances and temporary or persistent changes of the environmental conditions.

First-hand advice
We want to be more than just a contact for you, which is why we have the best consultants

Amber Howie
Marketing & Sales

Kevin
Technical Sales
About Us
Technical precision, sustainable management and clear added value for our customers

We really appreciate you and others in your office going the extra mile to get us trained, answer questions, get the equipment to us in time, and give us a fair price on the rental. We will definitely recommend IML to any others who need to buy or rent the equipment you have and will be using your services in the future. We have also let others in our Power sector know about the capabilities and they may be interested to use a drill as well.
We recently used the IML drills for our annual 69kV inspection. We own one drill and we leased another from IML. We could not ask for better customer service and support. Help was just a phone call away. We will definitely be looking to purchase another drill in the near future. Thanks again for your help through the inspections process.
I purchased IML RESI F300 machine for a wood structure assessment of a Yacht Club deck in BC, Canada. I had about 150 readings in two days and the machine worked for me PERFECTLY! The IML staff was exceptionally helpful both before and after we purchased the equipment. Overall, the equipment package and the service I received were beyond my expectations!
We at Nationwide Tree Service are super Excited about our tree inspection drills that we purchased from your company. I was really surprised to find out that no one in my area uses these drills. My drills have been making me money from day one. My customers are really impressed by the the data that the drills provide to them on the health of their trees. I’ve been told on several occasions the the customer choose my company just because of how impressed they were that we had the drills. A couple of these customers even spent several hundreds of dollars more just to go with my company. We think the drills are great, our customers are super impressed by them and they are already paying for themselves.
Very well pleased with initial start from the first call to get information on drill and to the follow up with our purchase seeing how we liked it. We here with the City of Raleigh really love our new drill. We have used the older version for years and find that the new technology drills are a great improvement. Good job IML North America.
I have been using Resistographs for over 15 years. In my field of work I am assessing the condition of wooden timbers in historical bridges, old warehouses, old mill buildings, marine pilings, and even utility poles. I recently upgraded to the IML PD300 and I am very happy. The drill is very similar to the prior generation of drills which used graph paper. The newer versions are operated using software and all the graphs are easily downloaded onto my computer and can be included into my technical reports as PDF’s. The drill itself operates at a faster speed than the prior generations giving me the ability to collect more data during an inspection. This is a very effective non-destructive tool for assessing wooden timbers, pilings and poles. – Matt Anderson, Wood Science Consulting.
IML and its staff are without question, the most knowledgeable and helpful service industry professionals I’ve ever worked with. Their company sets the example for all others within the industry. Having worked with them on several occasions over the past few years, I have yet to be disappointed. The level of service we receive as a small utility contractor, is what you’d expect an international corp. to receive. IML has earned a life-long customer and proponent.
I recently got trained on the PD-500 at their NH facility. The training was great. Everyone was very knowledgeable and friendly. It looks to be a great tool that we are excited to start using. Thanks.
When I arrived at IML in NH Bob, Kevin and Amber made me feel very comfortable with their products. They gave me a thorough training about the F-500 resistograph. I bought a used F-500 that had been completely refurbished. They in no way pressured me to buy the more expensive models. However. If the need arises I may upgrade. I can see that the product is at the highest quality. They also told me that they were available anytime to answer my questions, giving me their direct lines. When I buy expensive items most of the time I feel like I got ripped off, but after the experience at IML I felt like I got a great deal and I am excited with the future possibility of the product.”
I purchased an F-Series drill to use for inspecting decay in trees from IML. They were very friendly throughout the process and did not try to push me into any one of there products. Amber took time to get to know what I would be using the drill for and what would fit my budget. I ended up purchasing a refurbished drill and when it arrived I was surprised how clean and new the drill looked. If you told me the drill was new I would have never known. I did end up having an issue after drilling my second hole. I emailed Amber and she got back to me quickly and had the shop call me on the phone at a time that worked for me and I was able to fix the issue quickly and easily myself. They have offered many times to do training on the drill both over zoom/facetime or in person. I could not be happier with my experience with IML and their commitment to the tree care industry