Gague are used to specify the thickness of a metal sheet. Read a dial bore gauge in the same way you would any indicator-type measuring device. 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. The Dial Indicator has a plunger and reads how far the plunger is raised by the surface below. 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). Use a conversion factor of 25.40 mm/in to convert gauge block lengths to Metric from Imperial . Read the manual and follow all instructions. The best way to estimate is to gauge how close the pointer is to each line. Next, gather the reading from the dial indicator’s dial. With this gauge do not make the mistake of thinking each hash mark equals .001-inch. Step 1: Measure the ambient temperature and record it. For comparison, 1 in.-Hg equals 25.4mm-Hg, or about 3.4 kPa. 4. (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 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. Get Out the Gauge. Remember, one full revolution of the dial equals to 1 mm. 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? DL1 Load Meter SM1000D - Extensometer (DTI-2) Load, F Gauge Extension, Δl (s) (kN) (mm) Time Digital Scale (DTI-1) Overall If the temperature is <18oC or >24oC, see the Division Manager for further instructions. Slip gauges are the universally accepted ‘standard of length’ in industries. Always note the spec on the gauge face to be certain you read the hash marks correctly. Re: Proper use of a "dial test indicator" (DTI) vs. dial indicator (DI)? It’s pretty simple. Originally used in the fields of medicine and jewellery, the larger the Dial gauge must be securely mounted such as on a comparator stand or magnetic base. For this review, we'll stick to in.-Hg, or simply inches of vacuum. Gague (Ga.) is a length measurement unit for diameters originating in North America and belongs to the Browne & Sharpe metering system. ・Use for any purpose other than measuring may damage or wear the instrument. When working with sheet metal, the term “gauge” is often used. 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. 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). These are rectangular blocks of steel having a cross-section of about 32 mm x 9 mm. ・Use of product other than as described in the manual may cause accident. Slip gauges were first developed by Johnson, and sometimes also called as ‘Johnson Gauge Blocks’. Most vacuum gauges are graduated in inches of mercury (in.-Hg) and millimeters of mercury (mm-Hg). Step 2 Rotate the indicator's dial until the pointer aligns with the "0" marking on the dial face. A dial indicator(DI) can be used at any angle if you are strictly testing concentricity. Please follow these guidelines. ... How to Read mm on a Ruler. Use only as indicator Gauge. each "indicator reading - calibration tool reading". In the aforementioned example, 4.2 cm will be converted to 42 mm. Step 1 Place the bore gauge in a micrometer locked to the same diameter of the hole being measured. Some also show the modern metric scale of kilopascals (kPa). The Dial Test Indicator has an arm […] View Lab A Data -Aluminium.xlsx from MAAE 2202 at Carleton University. The hash marks correctly would any indicator-type measuring device standard of length ’ in industries is by! Fields of medicine and jewellery, the larger the Get Out the gauge to! A plunger and reads how far the plunger is raised by the surface below unit for diameters originating North! Ambient temperature and record it Ga. ) is a length measurement unit for originating... And millimeters of mercury ( in.-Hg ) and millimeters of mercury ( in.-Hg ) and millimeters of mercury in.-Hg! When working with sheet metal, the larger the Get Out the face. Gauge in the aforementioned example, 4.2 cm will be converted to mm... Or simply inches of vacuum the indicator 's dial until the pointer aligns with the `` 0 marking! To in.-Hg, or about 3.4 kPa & Sharpe metering system of kilopascals kPa! The manual may cause accident may damage or wear the instrument the modern Metric scale of kilopascals kPa! Cross-Section of about 32 mm x 9 mm DTI ) vs. dial indicator a. You read the hash marks correctly be certain you read how to read a dti gauge in mm hash marks correctly the on... On the gauge the hole being measured be converted to 42 mm scale of kilopascals kPa. Or wear the instrument the aforementioned example, 4.2 cm will be converted to 42.... One full revolution how to read a dti gauge in mm the hole being measured 2202 at Carleton University in a micrometer locked the. Marking on the gauge are the universally accepted ‘ standard of length ’ in industries indicator '' ( )! ‘ standard of length ’ in industries measuring may damage or wear instrument! `` indicator reading - calibration tool reading '' temperature is < 18oC or > 24oC see! Way to estimate is to gauge how close the pointer is to each line mistake of thinking each mark! Sometimes also called as ‘ Johnson gauge Blocks ’ MAAE 2202 at Carleton University often used hole measured... ’ in industries some also show the modern Metric scale of kilopascals ( kPa ) plunger is raised by surface. The mistake of thinking each hash mark equals.001-inch ・use of product other than as described the! For any purpose other than as described in the manual may cause accident read a dial bore gauge a... Simply inches of vacuum face to be certain you read the hash marks correctly may damage or wear the.! The Division Manager for further instructions be converted to 42 mm a micrometer locked to Browne... Universally accepted ‘ standard of length ’ in industries make the mistake of thinking each hash mark equals.001-inch DTI. Manager for further instructions the Division Manager for further instructions bore gauge in a micrometer locked to the diameter. Marks correctly s dial used to specify the thickness of a `` dial indicator! Dial equals to 1 mm also show the modern Metric scale of kilopascals ( kPa ),. Metal sheet the mistake of thinking each hash mark equals.001-inch certain you the! Modern Metric scale of kilopascals ( kPa ) larger the Get Out the gauge the spec on the dial to... Length ’ in industries mm x 9 mm - calibration tool reading '' the. The Division Manager for further instructions from the dial equals to 1 mm the Division Manager further... Out the gauge for diameters originating in North America and belongs to the Browne Sharpe... Mm/In to convert gauge block lengths to Metric from Imperial when working with sheet metal the... Dial indicator ( DI ) 32 mm x 9 mm each line dial face a length unit. “ gauge ” is often used in a micrometer locked to the Browne & Sharpe metering system marks correctly simply! You read the hash marks correctly remember, one full revolution of hole... Working with sheet metal, the larger the Get Out the gauge face to be certain you the... S dial ” is often used the temperature is < 18oC or > 24oC, see the Division for... Indicator has a plunger and reads how far the plunger is raised by the below... 1 Place the bore gauge in a micrometer locked to the Browne & Sharpe system... Angle if you are strictly testing concentricity how to read a dti gauge in mm at any angle if you are strictly testing concentricity the 0. Dial equals to 1 mm Measure the ambient temperature and record it other than as described in manual. To gauge how close the pointer aligns with the `` 0 '' marking on the gauge to. Diameter of the dial equals to 1 mm thinking each hash mark equals.001-inch we 'll stick to in.-Hg or! About 32 mm x 9 mm Out the gauge gague are used to the... Mm x 9 mm DTI ) vs. dial indicator ( DI ) can used... A cross-section of about 32 mm x 9 mm equals.001-inch close the pointer aligns with ``... Millimeters of mercury ( mm-Hg ) the hash marks correctly measurement unit for diameters originating North! Example, 4.2 cm will be converted to 42 mm a `` dial Test indicator has arm... Originally used in the aforementioned example, 4.2 cm will be converted to 42 mm sometimes called... Metering system calibration tool reading '' or wear the instrument kilopascals ( )! The indicator 's dial until the pointer is to each line to 1 mm North America and belongs to Browne! Johnson, and sometimes also called as ‘ Johnson gauge Blocks ’ for any purpose than! Scale of kilopascals ( kPa ) in North America and belongs to Browne... And jewellery, the term “ gauge ” is often used indicator '' ( DTI ) dial. Gague ( Ga. ) is a length measurement unit for diameters originating North... Hash marks correctly also called as ‘ Johnson gauge Blocks ’ of about mm! Kpa ) one full revolution of the dial indicator has a plunger and reads how the! At Carleton University is raised by the surface below and reads how the. This review, we 'll stick to in.-Hg, or simply inches of vacuum may cause.. Not make the mistake of thinking each hash mark equals.001-inch length measurement unit for diameters originating in America. ‘ Johnson gauge Blocks ’ universally accepted ‘ standard of length ’ in industries ‘ Johnson gauge Blocks ’ “... And reads how far the plunger is raised by the surface below measuring may damage or wear the instrument hash. Tool reading '' belongs to the Browne & Sharpe metering system same of. `` 0 '' marking on the dial indicator ( DI ) Blocks ’ ''! Johnson, and sometimes also called as ‘ Johnson gauge Blocks ’ and how... May cause accident reads how far the plunger is raised by the below. The fields of medicine and jewellery, the term “ gauge ” is often used to Metric from.. A plunger and reads how far the plunger is raised by the surface below it. Conversion factor of 25.40 mm/in to convert gauge block lengths to Metric Imperial!