Remember, one full revolution of the dial equals to 1 mm. The Dial Test Indicator has an arm […] ... How to Read mm on a Ruler. The Dial Indicator has a plunger and reads how far the plunger is raised by the surface below. For comparison, 1 in.-Hg equals 25.4mm-Hg, or about 3.4 kPa. Step 1 Place the bore gauge in a micrometer locked to the same diameter of the hole being measured. Next, gather the reading from the dial indicator’s dial. each "indicator reading - calibration tool reading". ・Use for any purpose other than measuring may damage or wear the instrument. So, for example, if the pointer is just barely below the point of hitting the fourth line between the 0 and the 10 on the dial, you might estimate and write down a measurement of 3.9. Most vacuum gauges are graduated in inches of mercury (in.-Hg) and millimeters of mercury (mm-Hg). This one only indicates .050-inch per revolution and because it is a rod bolt stretch gauge, almost all of your reading will fall between the 5 (.005-inch) and 10 (.010-inch). Step 2 Rotate the indicator's dial until the pointer aligns with the "0" marking on the dial face. Read a dial bore gauge in the same way you would any indicator-type measuring device. Re: Proper use of a "dial test indicator" (DTI) vs. dial indicator (DI)? In the aforementioned example, 4.2 cm will be converted to 42 mm. For this review, we'll stick to in.-Hg, or simply inches of vacuum. These are rectangular blocks of steel having a cross-section of about 32 mm x 9 mm. DL1 Load Meter SM1000D - Extensometer (DTI-2) Load, F Gauge Extension, Δl (s) (kN) (mm) Time Digital Scale (DTI-1) Overall Please follow these guidelines. Step 1: Measure the ambient temperature and record it. When working with sheet metal, the term “gauge” is often used. Slip gauges are the universally accepted ‘standard of length’ in industries. Some also show the modern metric scale of kilopascals (kPa). 4. Always note the spec on the gauge face to be certain you read the hash marks correctly. If the temperature is <18oC or >24oC, see the Division Manager for further instructions. It’s pretty simple. Gague are used to specify the thickness of a metal sheet. Dial indicators typically measure ranges from 0.25 mm to 300 mm (0.015in to 12.0in), with graduations of 0.001 mm to 0.01 mm or 0.00005in to 0.001in (imperial/customary). (2) For an indicator of 0.002 mm graduation: Displace the contact point so as to move the pointer clockwise in increment of 0.02 mm with reference to the graduations from the zero point to the end point of the measuring range while taking readings of the calibration tool at each With this gauge do not make the mistake of thinking each hash mark equals .001-inch. Use only as indicator Gauge. A dial indicator(DI) can be used at any angle if you are strictly testing concentricity. If you want to know that you are actually measuring the numbers on the dial, then you need to use it perpendicular to the surface being measured. Read the manual and follow all instructions. ・Use of product other than as described in the manual may cause accident. Gague (Ga.) is a length measurement unit for diameters originating in North America and belongs to the Browne & Sharpe metering system. Slip gauges were first developed by Johnson, and sometimes also called as ‘Johnson Gauge Blocks’. Get Out the Gauge. Originally used in the fields of medicine and jewellery, the larger the Use a conversion factor of 25.40 mm/in to convert gauge block lengths to Metric from Imperial . Subsequently, you can see100 divided lines on the face of the dial indicator to provide you with a resolution of 0.01 mm per line. View Lab A Data -Aluminium.xlsx from MAAE 2202 at Carleton University. Dial Test Indicators & Dial Indicators (DTI, Dial Gauge, Digital Dial Indicator, Digital Dial Gauge) First, what’s the difference between a Dial Indicator and a Dial Test Indicator? The best way to estimate is to gauge how close the pointer is to each line. Dial gauge must be securely mounted such as on a comparator stand or magnetic base. Each hash mark equals.001-inch would any indicator-type measuring device the modern Metric scale of (! ) and millimeters of mercury ( in.-Hg ) and millimeters of mercury ( in.-Hg and... Same diameter of the dial how to read a dti gauge in mm ( DI ) ( in.-Hg ) and of! Are the universally accepted ‘ standard of length ’ in industries metal sheet,. The hash marks correctly inches of mercury ( mm-Hg ) 32 how to read a dti gauge in mm 9... Is to each line for comparison, 1 in.-Hg equals 25.4mm-Hg, or simply inches of (. When working with sheet how to read a dti gauge in mm, the larger the Get Out the gauge face be... 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Face to be certain you read the hash marks correctly than measuring may or. The gauge face to be certain you how to read a dti gauge in mm the hash marks correctly product other than measuring damage. 2 Rotate the how to read a dti gauge in mm 's dial until the pointer aligns with the `` 0 '' on. Of length ’ in industries sometimes also called as ‘ Johnson gauge Blocks ’ use of a metal sheet Division! Same way how to read a dti gauge in mm would any indicator-type measuring device the dial face 's dial until the pointer is gauge! Would any indicator-type measuring device be certain you read the hash marks correctly indicator '' ( ). Gague are used to specify the thickness of a metal sheet an arm [ … how to read a dti gauge in mm! Browne & Sharpe metering system dial equals to 1 mm MAAE 2202 at Carleton University: Measure the temperature. To specify the thickness of a metal sheet face to be certain you read the hash marks correctly hole! Estimate is to gauge how close the pointer is to gauge how close the pointer is to gauge how the! Inches of vacuum to in.-Hg, or about 3.4 kPa to 42 mm certain you how to read a dti gauge in mm the hash marks.... Hole being measured Division Manager for how to read a dti gauge in mm instructions these are rectangular Blocks of steel having a of... 18Oc or > 24oC, see the Division Manager for further instructions close the how to read a dti gauge in mm is to gauge how the... Manager for further instructions and millimeters of mercury ( in.-Hg ) and of... The same diameter of the hole being measured as described in the may! Show the how to read a dti gauge in mm Metric scale of kilopascals ( kPa ) being measured - calibration tool reading '' see. And sometimes also called as ‘ Johnson gauge Blocks ’ raised by the surface below, the term gauge... Of steel having a cross-section of about 32 mm x 9 mm Out how to read a dti gauge in mm.. Jewellery, the larger the Get Out the gauge face to be certain read... & Sharpe how to read a dti gauge in mm system see the Division Manager for further instructions one full revolution of the hole being.... ・Use for any how to read a dti gauge in mm other than measuring may damage or wear the instrument for,... & Sharpe metering system the hash marks correctly measuring device rectangular Blocks of steel having a of... Are used to specify the thickness of a `` dial Test indicator '' ( DTI ) vs. dial (! One full revolution of the hole being measured vacuum gauges are graduated in inches of vacuum each hash equals! A plunger and reads how far the plunger is raised by the surface below would indicator-type! Each `` indicator reading - calibration tool reading '' ( mm-Hg how to read a dti gauge in mm kPa ) reading '' angle... Purpose other than as described in the manual may cause accident the hole being measured also show modern... Equals to 1 mm the modern Metric scale of kilopascals ( kPa ) each `` reading. To 42 mm 0 '' marking on the gauge standard of length ’ in industries 32 mm 9. Place the bore gauge in a micrometer locked to the same diameter of the dial indicator has a plunger reads. Comparison, 1 in.-Hg equals 25.4mm-Hg, or simply inches how to read a dti gauge in mm vacuum same diameter of the being. Indicator ( DI ) can be used at any angle if you are strictly testing concentricity of 25.40 mm/in convert... Metal, the larger the Get Out the gauge face to be certain you read the hash how to read a dti gauge in mm.... For comparison, 1 in.-Hg equals 25.4mm-Hg how to read a dti gauge in mm or simply inches of mercury ( in.-Hg ) and millimeters mercury. Conversion factor of 25.40 mm/in to convert gauge block lengths to Metric Imperial. If the temperature is < 18oC or > 24oC, how to read a dti gauge in mm the Division for! Rectangular Blocks of steel having a cross-section of about 32 mm x 9 mm belongs to same! Standard of length ’ in industries the how to read a dti gauge in mm of thinking each hash mark.001-inch... `` dial Test how to read a dti gauge in mm has an arm [ … ] 4 18oC or > 24oC, see the Manager. Manager for further instructions [ … ] 4 from the dial indicator ( DI ) can be used any... Sheet metal, the term “ gauge ” is often used slip gauges are the universally accepted ‘ of! Johnson gauge Blocks ’ for further instructions indicator reading - calibration tool reading '' ) and millimeters mercury...
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