Marmonix MVS-432-4 Articulating Video Borescope

The Marmonix MVS-432-4 articulating video borescope has the slimmest tip in the MVS-430 series: a 3.9 mm camera with two-way 360° steering on a 2 m semi-rigid cable. Feed it through a spark-plug hole, an injector port or a small bore, steer the tip from the handle and check the inside on the 4.3-inch IPS screen. Then save a 1080p photo or a 720p video for the report, without taking the machine apart.

It is part of our video borescopes and inspection cameras range. To compare tip size, cable length and articulation across models, read our best video borescopes buyer’s guide.

Why choose the MVS-432-4

• 3.9 mm tip: goes where 6 mm and 8.5 mm probes cannot, such as injector and glow-plug holes, small bores, heat-exchanger tubes and instrument ports
• Two-way steering, 360° view: bend the tip to look back at valve seats, along cylinder walls or around elbows
• 2 m semi-rigid cable: holds its shape so you can guide it along a path, and bends round curves
• Built-in 4.3-inch IPS screen: no phone, app or Wi-Fi needed, and a clear view from different angles
• Saves evidence: 1920 × 1080 JPG photos and 1280 × 720 AVI video at 15–25 fps
• IP67 camera head: for wet, oily and dusty areas
• CE, RoHS and ISO 9001, with local supply and support across the UAE and GCC

Where the MVS-432-4 is used

• Engine workshops: carbon build-up, valve and piston damage, cylinder-wall scoring, through the spark-plug or injector hole
• Aviation and turbines: small inspection ports on compressors and turbines (follow the engine maker’s inspection procedure)
• Gearboxes and hydraulics: gear teeth, bearings, small bores and manifold drillings
• Heat exchangers and tubes: deposits, corrosion and blockages in small-diameter tubes
• Manufacturing QA: burrs, swarf and weld quality in drilled passages and castings

MVS-432-4 specifications

Values are taken from the official Marmonix MVS-430 series datasheet (Downloads tab).

MVS-432-4 vs other MVS-430 series models

How to inspect with the MVS-432-4

1. Switch off, isolate and let the machine cool to below 50 °C. Remove the plug, cover or port you will inspect through.
2. Switch on the MVS-432-4 and check the live image on the screen.
3. Insert the probe slowly. Keep the tip straight while you pass through the opening, then steer it with the control on the handle.
4. Turn the probe gently to look around 360°. Do not force the tip against an obstruction or bend the cable sharply.
5. Save photos or video of anything you find, with the same view each time so results can be compared later.
6. Straighten the tip before you pull the probe out, then clean it and store the kit in its case.

Complete your inspection kit

For long, straight runs in pipes and ducts, the MVS-205-8H has an 8.5 mm head on a 5 m cable. For high-end inspection, see the MVS 600 series. Add an MIT-700 infrared thermometer to check surface temperatures before you insert the probe.

MVS-432-4 vs other slim articulating borescopes in the UAE

Figures are from the sellers’ or makers’ published pages at the time of writing; “—” means the value was not stated.

What’s in the box

MVS-432-4 borescope with 3.9 mm probe, USB charging and data cable and hard carrying case, as shown in the product photos. Contact us to confirm the full kit and accessory tips before ordering.

Marmonix supplies the MVS-432-4 directly across the UAE and GCC with the official datasheet and local technical support.

MVS-432-4 articulating borescope FAQ

How thin is the MVS-432-4 probe?

The camera tip is 3.9 mm across with a single lens, which is the smallest in the Marmonix MVS-430 series. It fits through spark-plug and injector holes, small bores and instrument ports where 6 mm and 8.5 mm probes cannot pass.

How does the articulation work?

The tip bends in two directions, controlled from the handle, and with a turn of the probe you can look around a full 360°. That lets you look back at a valve face, along a cylinder wall or around a corner without taking anything apart.

How long is the cable, and is it flexible?

The insertion tube is 2 m and semi-rigid, so it holds the shape you give it and can be pushed along a path, but still bends round curves. For longer reach with a 6 mm tip, choose the MVS-433-6 (3 m).

Can I save photos and video?

Yes. The MVS-432-4 saves 1920 × 1080 JPG photos and 1280 × 720 AVI video, which you can copy to a PC for work orders, warranty claims and customer reports.

Is the probe waterproof?

The camera head is rated IP67, so it can be used in wet areas and briefly under water, and is protected against dust. Clean oil and fuel off the probe after use. The handle and screen are not waterproof.

Which MVS-432 model should I choose?

Choose by the smallest opening you need to pass. Use the MVS-432-4 (3.9 mm) for the tightest access, the MVS-432-6 (6 mm) for most engine and gearbox work, and the MVS-432-8H (8.5 mm) when the opening allows a larger tip and you want more light.

Can it be used on a running or hot engine?

No. The rated operating temperature is −10 to 50 °C, so let engines, turbines and pipework cool first, and isolate and lock off machines before you insert the probe.