The best borescopes are also known as inspection cameras, and they have become must-have accessories for tradesmen and DIYers to inspect drains, pipes and wiring without removing walls and ceilings. They are also essential tools for mechanics and car enthusiasts, offering a clear view of hard to reach engine or suspension parts without hours of dismantling.
These tiny cameras can be manoeuvred into places which would be unreachable in any other way – short of knocking down walls, digging up drains or dismantling vehicles. And who wants to do that if they can avoid it?
Whether you're tracing an oil leak, unblocking a drain or checking wall cavities, the applications for these tiny camera are nearly limitless. We're all familiar with the medical uses of endoscopes (let's not even GO there), so this is the same concept extended to everyday industrial and repair work.
Borescopes and inspection cameras come in many forms. They may have a rigid arm with a fixed camera, a flexible arm, a soft bendy wire-like extension or a mixture. Borescopes and inspection cameras are varied and ingenious. Simple optical principles (like periscopes) have now made way for tiny cameras at the business end and some kind of display device at the user’s disposal.
Accessories can extend the possibilities still further. Tiny mirrors can re-direct the view sideways, for example, while hooks and magnets can help retrieve lost items from hard-to-reach places. There is a lot of flexibility (often literally), and the choices have become increasingly bewildering.
We've added a section at the end of this article on what we look for in a borescope, but keep in mind that they are designed for a wide range of jobs and everyone's needs are different.
Best borescopes and inspection cameras in 2022
This is a solid unit with a rubberized grip ideal for holding in one hand, and the protective bumpers in the design are appreciated. The buttons offer image rotation, variable light intensity and digital magnification, while the 3.5inch display gives immediate feedback, though the 320x240px resolution is pretty modest. A detachable hook, magnet or mirror end are included and, to help with orientation, the system can also keep the video’s horizon level even as the camera turns.
This makes the Bosch GIC 120 C ideal for plumbers, electricians and other fitters checking safety issues, attempting to minimize exploratory drilling or simply removing dropped items from drains. You can store images or video on the included 4Gb MicroSD card to help when showing customers and preparing reports. The flexibility on power is handy for long jobs away from a charging point; you can either use a 10.8v Bosch Li-Ion battery pack or AA cells (in an included adapter).
This is a neatly-designed inspection camera, made for the DIY market by one of the best-known names in power tools. The flexible camera winds neatly around the chunky main when not in use, and there is a built-in screen for convenience. The camera can store up to four images internally, but you can add to the memory with a microSD card, giving up to 32GB of extra storage.
There are limits, though. The 0.95m (3ft) cord will only be suitable for some jobs, and the 2.3in screen will not reveal a great amount of detail. However, you do get a magnetic head, hook and mirror attachments in the kit.
This is a 'snake' camera you can sneak in behind tricky blocks and baffles, but it can still capture sharp full-color images. For many that’s still amazing enough, but the Depstech also does so via Wi-Fi to an Android/iOS app, neatly removing one frustration from cabled devices, and letting you keep your phone away from potentially hazardous or just plain mucky environments.
Attachments include a magnet, a hook, and a 45-degree mirror, and the system lights its way using six LEDs, which, in practice, affords a focal range from about 5cm (a bit over 2-inches) to eight times that distance.
The Depstech DS450 (and its dual-lens siblings built on the same case) feels as natural to use as a mobile phone. The 4.5-inch IPS screen is about the same size and – with the camera cable connecting at the top centre – and is easier to hold vertically. The camera itself is well lit and provides good visibility, though the LEDs produce a distinctly-blue-tinged light. The claimed 1.96-200 inch focal range seems somewhat optimistic though, or perhaps the 2592 x 1944 pixel screen is simply too much resolution for the camera.
The excessively tight USB socket which connects the camera cable to the main unit and the slightly squidgy buttons are an annoyance, but the 3,300mAh battery supplies a very practical five hours worth of working time. The in-body torch is nice to have too.
This device has lot of the likeable qualities of the DS450-500 listed above, as it features the same handheld unit with generous 3,300mAh battery (5 hours), a gorgeous phone-quality display and instinctive vertical operation (though the vide can be rotated with a button press).
The difference here is the camera and cable which plugs into that super-tight USB socket at the top; this has two lenses affording the advantage of a side view without the need to obscure the forward view with a mirror accessory. In use, you can switch between the two views or see both at once, and the 2 megapixel resolution is good enough for most tasks. On the downside, the focal limit is a fairly short 10cm so you’ll need to get the camera close to what you’re inspecting. The price of the dual-lens version is a little higher too, meaning this might be better suited to more specific jobs like pipe inspection.
This is a ‘does what it says on the tin’ device, no more, no less. The VGA resolution is somewhat disappointing, given it is advertised as 2 megapixels on Amazon, but it can also be had for the price of two or three cups of coffee (at London or New York prices, anyway).
Even at this price, it still comes with adaptors for traditional, micro and Type-C varieties of USB, and Mac OS and Windows 10 are both capable of recognizing the camera too.
The big positive is that it broadly ‘just works,’ though you might need to download an app as explained in the manual. Crucially, though, you don’t need to service an additional battery-powered device or connect anything to Wi-Fi – it draws its power from the host device down the semi-rigid flex straight to your device and sends the picture back the same way. The small box at the user end of the cable includes a dimmer wheel for the LED, and the always useful key hook and mirror accessories are included, although they are a little wiry.
The major drawback is that this borescope does not work with iOS devices.
This more rugged-looking device is one which might stand up to a little more punishment than others on this list. It includes a fairly average monitor, though with 854 x 480 pixels it still beats some of the big brands. We like the torch for quick external inspections.
There are six brightness-adjustable LEDs surrounding the 70-degree angle main camera too, as well as a second lens (with one LED), so rather than fit a mirror attachment you simply flip the camera head to its side-camera mode via the switch not on the display device, but the user-end of the borescope where it attaches to the viewer.
There is also 32Gb of storage to record onto included, and the display is charged by familiar USB. However, it records 1080p video (effectively 2 megapixels) from a 1 megapixel sensor, so this sounds like resolution upsampling done purely for marketing reasons.
If you’re serious about keeping your guns in excellent condition, the best possible tool is a dedicated borescope, which will allow you to examine the barrel for carbon, copper and powder build-up and other damage. This, in turn, lets you better manage your cleaning and potentially save money without taking risks.
At 26 inches long, the NTG100H will fit inside any barrel of 0.2 calibre and above. To view the barrel wall, you can attach the mirror head, but there is a locking collar needed for this which is easily misplaced (though two spare mirror heads are included, which seems generous).
In terms of viewing, you connect via a cable to a Macbook, Chromebook or Windows PC and use the built-in camera software – this does restrict movement a little, though it is long enough. Measurements along the side will help you precisely pinpoint any issues you locate with the probe and there is a white collar you can slide to mark the spot.
Vividia has somewhat cornered the market in turning the corner (sorry), in that – in this price-bracket at least – articulating heads are few and far between. Thankfully it has chosen to offer the probe on a semi-flexible arm, so you can get the flexible head just about anywhere within reasonable reach.
The semi-flex can be bent and then retains its shape – a little like some desk lamps – which is handy for certain tasks, but since it’s a mechanical approach, rather than simply a stiff wire, the practical length is limited.
Vividia has kept on the safe side of that, so the scope should have a good long life, but the reach is much lower than some of the cheaper non-articulated alternatives.
With 12 built-in lights, this versatile but pricey videoscope has an exceptionally long, strong fiberglass core which packs away into a spool.
It might not look like much, a kind of coated wire-frame arrangement, but it’s actually much easier to grip than, say, the plastic spools common on extension leads. That thoughtful quality extends to the highly durable display which is both waterproof and oil/chemical resistant too. You need to worry about delicate touch-screens, as the controls are all on robust buttons around the display.
Images can be recorded as stills or video to the SD card, or output via the analog connector. Admittedly the design features what feels like a historic connector – the Mini-USB – but this is a professional tool with a professional price and the cost of a USB adapter is hardly relevant.
What we look for in a borescope
• Camera resolution: the more the better, though remember these cameras must be tiny to be useful. Be aware that some makers 'upsample' resolution to make it sound better than it actually is
• Screen size and resolution: the bigger and better the screen, the easier it is to get a proper view of what you're looking at
• Magnet tips: perfect for picking up small metallic objects that you wouldn't be able to extract any other way
• Mirrors: these let you get a sideways view in tight spaces where you can't turn the camera
• Hook attachments: another useful gadget for extracting small objects in confined spaces
• Battery life: the longer the better – you may be working away from a charging source for some time
• Memory card storage: most borescopes offer fixed internal storage but some have removable SD cards – useful if you need to offer images to a client, for example
• Wi-Fi: could be handy for viewing footage on your smartphone at a safe distance from the actual dirty work
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