TD500-Articulating Borescope

I watched tons of review of different endoscopes before ordering this one. Comes in case, great build quality, great picture quality, ease of use, could be cheaper, but if you are ok paying extra $ - you won't be disappointed. Really functional, has an SD card and ability to record photo and video. I got a longest camera cable length and you can use it for any occation, car repair, vent checks, etc. Battery life is good.

I have had this camera for about 6 months and love it as much as day 1. The picture are great quality and don't think any higher resolution is needed at least for automotive use. The pics I attached show how easy it isolate cause of engine mechanical issues. Much quicker than a leakdown test (although like a noid light, easy to tell a failure, but could lead you to false pass in some situations. My only recommendation to other techs would be to possibly consider spending the extra money for the 0.24" diameter camera. I have the 0.33" diameter and even though it works in most spark plug holes, it is very difficult to fit in some of the Fords with the smaller diameter plugs. It would probably be worth the extra $60. There are times when I felt a triple camera would be better, but the articulating triple cameras I have seen are near or over $1000. I might get the Teslong triple as an addition to this and still be way under the 1000 price point. The app is extremely convenient and allows you to connect to your phone to make taking pictures to show the customer much easier. Also allows you to set camera down and view from a remote spot such as when viewing for piston coming up on TDC when rotating crankshaft. As with anything else, I'm always learning new ways to use this camera but it is a real timesaver and leads to more accurate diagnostic results.

I've used a stick style articulating borescope on my airplane engine for years. It finally gave up the ghost so I needed a new one. I wasn't sure how I would like the semi-rigid tubing versus the aluminum "stick" design of my old scope. I was very happy to find this style is actually easier to use around the engine / inside cylinders because you needn't have a straight path to what you're trying to inspect. My last one had to connect to a laptop to see the image. This Teslong unit has it's own screen and a memory card, both of which make it super simple to inspect in real time and save snapshots or videos to refer to later or send to your A&P. The image is super sharp and the adjustable LED light on the tip is great to get the best lighting, bright for dark surfaces or dimmer for reflective surfaces. The one key thing I've learned with this one is to keep my thumb on the semi-rigid tube oriented with the articulated motion of the head so I know which way the head will move with the adjustment wheel on the head. It took a minute or two but now is pretty intuitive to get the head pointed right at what you want to see, even when it's buried out of view down in the engine. Love this thing! Update from my original review. I bought this in Nov 2023. In early May 2025, I pulled the borescope out of the toolbox to do a valve inspection on my engine and the borescope wouldn't focus on anything (near or far) and had an odd halo / haze over everthing. I contacted the Teslong support email describing the problem and asked for any advice on how to fix the issue. They responded within a day... +1 star (from my original 5). They asked for a few photos of the issue, an image of the receipt, and the original order number. I submitted that and a day later, received an email saying a new one was one the way! + another star... Is there a seven star rating on here?

I am a professional mechanic and use this tool every day. The camera comes in a very nice carrying case, molded to fit the camera shape for maximum protection. The articulating head is very easy to control and has a very wide range of motion. The light on the camera is very bright and able to light area that are completely dark. I have used this camera in my drains at home, I use it to inspect cylinder walls, I have gotten so lazy that I use it when I just don’t feel like laying down. The picture quality is beautiful 1080p, with a high resolution screen so you can see every detail of what you’re working on. The Wi-Fi broadcast function works wonderfully allowing you to view your camera feed in real time on any smartphone or tablet. The only limitations to this camera is your imagination on how to apply it.

husband does heating and air its used regularly. i have used it love it gets tight corners nice bright light zooms good. little pricey hence the 4 stars

Major upgrade over the red plastic Harbor Freight camera I used to have. The image is so clear and the adjustable light level is great for tight areas. The app is OK once you get it going but like most electronics that has to connect to a device-, generated wifi network it's a little glitchy. The articulation is very nice and the size of the camera is good for the price. Battery life is so-so but it recharges quickly. Case is nice. Only thing I wish it could do is have an articulating screen. Sometimes I wish I could tilt the screen upward if I need to set the screen/handle down on the ground or a car seat. Overall very satisfied and highly recommend

This has worked great, both for its intended purpose and also just as a camera for photographing very small items. I’ve used it inside engine cylinders, and to photograph small irregularities at the tops of drilled holes, and the pictures in every case have been very good. Definitely a worthwhile purchase!

This tool has endless possibilities for use. I have inspected storage tanks, boiler heat exchangers and multiple other mechanical items! This product amazes my customers!!!!

It’s amazing and has helped with a lot of different jobs that I have worked on - making them a lot easier. I’ve treated this thing pretty rough and it’s holding up really well. The ability to easily invert the image is very helpful as well as taking photos and videos.

AMAZING !!!! absolute game changer this makes any internal diag so easy. I use this all the time for internal engine inspection valvetrain, HVAC actuators, looking for leaks in tight places, checking for bent valves, checking for carbon buildup. Checking timing components and timing chain tensioners. If you dont have this camera for inspections your in the past and your wasting time. As a service technician working on cars everyday this is a must have I dont know how I didn't have it sooner. The price is amazing too Tool trucks sell this setup for 5x the price

Works well, just have to use strong hand to rotate.

Very clear picture, the articulation of the tip can be difficult and stiff to use

Wow, it comes in a very nice case. The instructions are a bit lacking but I was able to figure everything out after 10 minutes. It should be noted I have a high IQ. I scoped out my dad's ventilation system in his car and I was amazed how well it preformed. I cant wait to check out my small engines which is why I bought it. It now waits for me in my tool chest, yearning for action it will rarely see lol.