It is made from stainless steel which is durable and will not rust or corrode. They are usually of two types- inside and outside calliper. They are used to measure internal and external size e. It requires an external scale to compare the measured value. This tool is used on those surface where a straight ruler scale cannot be used. Some callipers are integrated with a measuring scale; hence there is no need of other measuring instruments to check the measured length.
Other types are odd leg and divider calliper. It is counted in the list of quality measuring instruments, which are used to measure small parameters with high accuracy. It has got two different jaws to measure outside and inside dimensions of an object. It can be a scale, dial or digital type Vernier calliper.
Vernier calliper is one of the most used mechanical measuring tools onboard ship. Least count of the vernier calliper is the difference between the values of main scale division and one vernier scale division.
It is an excellent precision tool which is used to measure small parameters and is much more accurate than the vernier calliper. The micrometre size can vary from small to large. The large micrometre calliper is used to measure large outside diameter or distance.
Large micrometre is used as a special mechanical measuring tool for main engine to record the outer diameter of the piston rod. They are available in two types- Inside micrometre to measure inside diameter and Outside micrometre for measuring outside diameter. Feelers gauges are a bunch of fine thickened steel strips of different thickness bundled together.
The thickness of each strip is marked on the surface of the strip. The feeler gauge is used to measure the clearance or gap width between surface and bearings. The feeler gauge is widely used to measure piston ring clearance, engine bearing cleaner, tappet clearance etc. Similar to the functionality of feeler gauge, this type of gauge is also known as tongue gauge, and it consists of long feeler gauge inside a cover with tongue or curved edge.
The long feeler strips protrude out of the cover like a telescope so that it can be inserted into remote places where feeler gauge access is not possible. It is used to measure the bearing clearance of the top shell. It is essential that after the use of the telescope gauge, the strip should be cleaned and retracted back to its housing, else it may damage the feeler strip. Poker gauge is one unique tool among different types of measuring instruments is available in mechanical or digital form on ships.
It is only used for one purpose; To measure propeller stern shaft clearance, also known as propeller wear down. It is a type of depth measuring instrument, whose reading indicates the wear down of the stern shaft. A special access point or plate is provided which can be either open, bolted, secured or welded, depending upon the ship design.
The Poker gauge is inserted to in this access point to measure the propeller drop. The poker gauge is a special instrument which is kept with the chief engineer, and the reading is usually taken every dry dock. The design of the poker gauge may vary as each vessel has customised poker gauge made available during the handing over from the shipyard. While taking the reading the shaft to be turned, so that propeller boss matches with the marking of the shaft. As the name suggests, Bridge gauge looks like bridge carrying the measuring instrument at the centre of the bridge.
They are used to measure the amount of wear of Main engine bearing. Typically the upper bearing keep is removed, and clearance is measured for the journal.
A feeler gauge or depth gauge can be used to complete the process. A liner measurement tool is a special tool for marine engines which comes in a set of the straight rod of different marked length, which can be assembled together to make the measuring tool of the required length. It is used to measure the wear down or increase the diameter of the engine liner.
It is considered as special tools when compared to other types of measuring tools and kept separately with other engine special tools under chief engineer or 2nd engineer supervision. American wire gauge or AWG is a standard tool which is circular and has various slots of different diameter in its circumference.
It is used to measure the cross section of an electric cable or wire. This tool is usually kept in the electrical workshop of the ship, and electrical officer uses it for measuring wire thickness. A tool to accurately measure the diameter of any hole is known as bore gauge, It can be a scale, dial or digital type instrument. The most common type which is used on the ship is dial type bore gauge, which comes with a dial gauge which is attached to the shaft and replacement rods, also known as measuring sleds, of different size to measure different hole dimensions.
It is usually calibrated in 0. A depth gauge is used to measure the depth of a slot, hole or any other surface of an object. It can be of scale, dial or digital type. The depth gauge can be a micrometre style type, a dial indicator type, or modified Vernier type tool, which means the measuring base is fitted on the reading scale of a micrometre, dial indicator or the Vernier scale.
Silicone plugs and silicone tunnels are very soft and rubbery, making them very comfortable to wear overnight or when doing sports. It should only be used on healed ears since the surface tends to attract more dust and debris than others, which can lead to irritation and infection in healing ears.
It also tends to block seepage that occurs naturally in stretched ears, trapping everything between the plug or tunnel and the skin of the earlobe. This can also cause an infection. To keep them clean, you must wash silicone plugs regularly with mild soap and water, then rinse well and make sure they are fully dry before use.
Saline works well too. When it comes to colours, titanium can be highly polished, or alternatively, anodised in different colours, so the choices are endless, making it easy to find something that will suit your unique style. What lifestyle you lead and whether the material can keep up! Most people with stretched ears will have a range of plugs which they change depending on what they are doing. No matter which material you choose, make sure you know how to clean them properly so they remain looking and feeling good for a long time.
New Designs. Single Flare vs. Double Flare Plugs Sep 28, Newsletter Keep up-to-date with the latest promotions, news and releases! Stainless steel for healing ear stretches As you can make stainless steel in the autoclave it makes sterilisation easy which makes it another option for piercings. Maintaining silver ear plugs Because silver has a tendency to tarnish it can be a pain to clean! Can you wear niobium with healing ears As with titanium and steel, it is a non-porous material that is safe for autoclaving and can be worn while your piercings and stretched ears are still healing.
Using glass for healing ears Glass is often used as an alternative to all metal plugs and jewellery as it has the same non-porous properties, so it can also be worn during the healing phase.
Glass is more versatile than people think for Plugs Glass is actually incredibly popular as an ear plug material because of the unique styles, and effects you can create. Bone and horn are not suitable for healing ears These are highly porous materials where bacteria collects easily, which makes them unsafe for healing ears, especially as they cannot be sterilised well either.
Caring for bone and horn ear plugs To keep them clean, you must use a damp cloth and a combination of lukewarm water and antibacterial soap. How to care for your wood plugs They should never be submerged in water, because wood acts like a natural sponge which causes the plug to expand.
Stone on healing ears is a no As another porous material stone easily traps bacteria on the surface which for fresh piercings is the quickest way to an infection.
Cleaning your stone plugs Stone plugs are actually the easiest organic material type to take care of because of its natural resistance to water. But you still should avoid them on healing ears Acrylic is only intended for healed piercings because it is porous by nature.
How do you sterilise acrylic plugs? Should you wear silicone on healing ears? Hazardous location environmental ratings indicate whether manufacturers have included safety features in products to facilitate their safe use in a hazardous environment. Before selecting a product for a hazardous location, ensure it is rated for your environment. Gauges cannot be sold to California or Oregon due to electrical efficiency requirements. Measure the thickness of painted metal without removing the coating.
The ultrasonic probe provides highly accurate readings. This gauge comes with a calibration certificate traceable to NIST that states it has passed a test for accuracy.
Use the included ultrasonic gel for maximum surface contact. Use calibration blocks to calibrate your thickness gauge. All blocks have a serial number and come with a calibration certificate traceable to NIST. For Surface Type. Number of Swatches. Base Width. Base Length. Tip Style. Manufacturer Model Number. Scriber Length. Base Material. Number of Gauge Pins. Mounting Rod Length. Mounting Rod Diameter. Connection Type. For Use On. Specifications Met. CE Marked. For Maximum Coating Thickness.
Display Type. For Coating Type. For Minimum Coating Thickness. View catalog pages 4. Send Cancel. How can we improve?
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