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Jeweller's Digital Pocket Scale (0.1-500g)requires 2X AAA batteries to power.whatsapp: https://wa.me/27828125252 as gumtree's messaging doesn't function correctly.
2y
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Alcohol Refractometer Alcoholometer 0~80% ATC Handheld Alcohol TesterThis Alcohol refractometer is designed for the measurement of distilled beverages (ethanol with water) like whiskey, brandy, fruit brandy, slivovitz, vodka, gin, tequila, Chinese alcohol, etc.It has a scale in the range of 0 - 80 % (VOL - alcohol volume percent).With Built-in ATC (Automatic Temperature Compensation) from 10~30 degree Celsius.Soft Rubber eyepiece for comfortable viewingEquipped with scale measurement which provides direct readingAdjustable manual focusingUse ambient light only which means battery or power source is not requiredEasy and very convenient to use. Place a few drops of the liquid on the optical part of the refractometer, cover the prism (the liquid will spread more easily over the prism), look through the eyepiece against the light (focus, if necessary) and you will be able to read the result value on the scale.Measuring Range 0-80% v/v(VOL - alcohol volume percent).Widely used for scientific research, food producing, alcohol retailer, etc.Before you use a refractometer, it needs to be calibrated. Most refractometers are calibrated by using a sample of distilled water. Add a few drops of distilled water to the clear sample plate. Close the daylight plate and allow the water to spread across the sample plate. Make sure there are no bubbles. Refractometers are temperature sensitive, so allow the hot sample to cool and reach room temperature not exeeding 10 - 30 degrees Celsius.Hold the refractometer up to natural light and take a reading. Most refractometers have a calibration knob or screw that will let you adjust the zero setting. What you want to do now is adjust the refractometer with the included screwdriver so it reads zero with distilled water in it. (A sample of pure water will have a specific gravity of approximately 0.998 at 20 degrees Celsius.) This may take a few tries.Thereafter, you could also use another liquid with known specific gravity (weight per liter) typically these sell as refractometer calibration liquid (not included)
2y
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TC100 Coating Thickness Gauge Ultra-precise 0.1micron / 0-1300 Fe and NF with calibration plates
Automatically identifies iron or aluminum
substrate, the screen quickly displays the substrate material, Fe stands
for ferromagnetic substrate, and NF stands for non-ferromagnetic
materials, such as aluminum, aluminum alloy, copper, etc.
Whether it is ordinary paint or metallic paint, the paint thickness can be accurately measured.
The minimum resolution is 0.1um, and the resolution above 100um is 1um. Range: 0.1 ~ 1300um.
Measures the thickness of galvanized layer, nickel plated layer, gold plated layer, metal oxide layer, anodized layer, etc.
Cannot measure the thickness of paint on plastic surfaces.
Coins were metered on the smooth section of the coin as the instrument
will give a faux reading of any uneven impression on the coin.
2y
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