Standards for Linear Measurement Devices
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Dial Caliperscalipers at the Conclusion of This Presentation, You Will Be Able To…
Forging new generations of engineers DialDial CalipersCalipers At the conclusion of this presentation, you will be able to… identify four types of measurements that dial calipers can perform. identify the different parts of a dial caliper. accurately read an inch dial caliper. DialDial CalipersCalipers GeneralGeneral InformationInformation DialDial CalipersCalipers are arguably the most common and versatile of all the precision measuring tools. Engineers, technicians, scientists and machinists use precision measurement tools every day for: • analysis • reverse engineering • inspection • manufacturing • engineering design DialDial CalipersCalipers FourFour TypesTypes ofof MeasurementsMeasurements Dial calipers are used to perform four common measurements on parts… 1. Outside Diameter/Object Thickness 2. Inside Diameter/Space Width 3. Step Distance 4. Hole Depth OutsideOutside MeasuringMeasuring FacesFaces These are the faces between which outside length or diameter is measured. InsideInside MeasuringMeasuring FacesFaces These are the faces between which inside diameter or space width (i.e., slot width) is measured. StepStep MeasuringMeasuring FacesFaces These are the faces between which stepped parallel surface distance can be measured. DepthDepth MeasuringMeasuring FacesFaces These are the faces between which the depth of a hole can be measured. Note: Work piece is shown in section. Dial Caliper shortened for graphic purposes. DialDial CalipersCalipers NomenclatureNomenclature A standard inchinch dialdial calipercaliper will measure slightly more than 6 inches. The bladeblade scalescale shows each inch divided into 10 increments. Each increment equals one hundred thousandths (0.100”). Note: Some dial calipers have blade scales that are located above or below the rack. BladeBlade The bladeblade is the immovable portion of the dial caliper. SliderSlider The sliderslider moves along the blade and is used to adjust the distance between the measuring surfaces. -
Precision Shop Tools
Precision, Quality, Innovation PRECISION SHOP TOOLS Band Saw Blades Force Measurement Jobsite & Workshop Tools Laser Measurement Metrology Equipment Precision Granite Precision Ground Solutions Precision Measuring Tools PTA & Hand Tools Roundness Measurement Service Webber Gauge Blocks Catalogue 74E PRECISION, QUALITY, iNNOVATiON For more than 132 years, manufacturers, builders and craftsmen worldwide have depended upon precision tools and saws from The L.S. Starrett Company to ensure the consistent quality of their work. They know that the Starrett name on a saw blade, hand tool or measuring tool ensures exceptional quality, innovative products and expert technical assistance. With strict quality control, state-of-the-art equipment and an ongoing commitment to producing superior tools, the thousands of products in today’s Starrett line continue to be the most accurate, robust and durable tools available. This catalogue features those tools most widely used on a jobsite or in a workshop environment. 2 PUNCHES More than 10 models between automatic centre punches with adjustable stroke, centre punches with round shanks, with square shanks, for prick punches, square head nail sets, drive pin punches and brass drive pin punches. 5 Machinists’ levels Starrett offers a wide variety of levels, many for jobsite and workshop applications. This section has a different type of level – precisely made metal tools with ground surfaces designed specifically for machine shop and toolroom use. Products include our Master Precision Level, machinists’ levels with ground and graduated vials, precision bench levels with double plumbs available at up to 600mm / 24", cross test levels, bench levels and a nickel plated pocket level. 13 SHOP TOOLS A wide variety of gauges and precision hand tools designed for the delicate shop work of machinists and toolmakers. -
Units and Conversions
Units and Conversions This unit of the Metrology Fundamentals series was developed by the Mitutoyo Institute of Metrology, the educational department within Mitutoyo America Corporation. The Mitutoyo Institute of Metrology provides educational courses and free on-demand resources across a wide variety of measurement related topics including basic inspection techniques, principles of dimensional metrology, calibration methods, and GD&T. For more information on the educational opportunities available from Mitutoyo America Corporation, visit us at www.mitutoyo.com/education. This technical bulletin addresses an important aspect of the language of measurement – the units used when reporting or discussing measured values. The dimensioning and tolerancing practices used on engineering drawings and related product specifications use either decimal inch (in) or millimeter (mm) units. Dimensional measurements are therefore usually reported in either of these units, but there are a number of variations and conversions that must be understood. Measurement accuracy, equipment specifications, measured deviations, and errors are typically very small numbers, and therefore a more practical spoken language of units has grown out of manufacturing and precision measurement practice. Metric System In the metric system (SI or International System of Units), the fundamental unit of length is the meter (m). Engineering drawings and measurement systems use the millimeter (mm), which is one thousandths of a meter (1 mm = 0.001 m). In general practice, however, the common spoken unit is the “micron”, which is slang for the micrometer (m), one millionth of a meter (1 m = 0.001 mm = 0.000001 m). In more rare cases, the nanometer (nm) is used, which is one billionth of a meter. -
North Montco Technical Career Center in Partnership with Hunter
ModernModern AutomotiveAutomotive TechnologyTechnology ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath z Describe standard and metric measuring systems z Identify basic measuring tools z Describe how to use basic measuring tools z List safety rules for measuring tools z Summarize basic math facts ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath 1. A TORQUETORQUE WRENCHWRENCH is used to apply a specific amount of turning force to a fastener. 2. A VACUUMVACUUM GAUGEGAUGE is commonly used to measure negative pressure or suction. TorqueTorque WrenchWrench TheoryTheory One foot-pound equals one pound of pull on a one-foot-long lever arm FlexFlex BarBar TorqueTorque WrenchWrench Uses a bending metal beam to make the pointer read torque on the scale DialDial IndicatorIndicator TorqueTorque WrenchWrench Very accurate type of torque wrench RatchetingRatcheting TorqueTorque WrenchWrench Torque value is set by turning the handle– fastener is tightened until it clicks VacuumVacuum TestTest Connect a vacuum gauge to the inlet - the negative pressure side of the pump ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath 3. A MICROMETERMICROMETER can easily measure to one ten-thousandth of an inch. 4. A FEELERFEELER GAUGEGAUGE is used to measure small clearances or gaps between parts. ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath Anvil Measuring Faces Barrel Spindle Thimble Frame PartsParts ofof aa MicrometerMicrometer ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath Each Blade of a Feeler Gauge is in .001 Increments ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath 5. A DIALDIAL INDICATORINDICATOR is used to measure part movement in thousandths of an inch. 6. The CONVENTIONALCONVENTIONAL MEASURINGMEASURING SYSTEMSYSTEM originated from sizes taken from the parts of the human body. -
Essential Marking & Measuring
HARRISON & CLOUGH LTD ESSENTIAL MARKING & MEASURING LEADING BRANDS INNOVATION VALUE FOR MONEY All available from the experts - Harrison & Clough Ltd Harrison & Clough Ltd. Tel • 0844 571 22 22 P.O. Box 9, Keighley, Fax • 0844 571 22 33 West Yorkshire, Email • [email protected] BD21 4EG. Website • www.harclo.com BMI Levels BMI manufacture high-quality measurement tools for the most diverse of applications. The products meet the highest demands of trade and industry combining tradition and innovation. A further indication of the continuous innovation by BMI are the 40 active patents. Two of BMI patented milestones in the development and production of practical measuring instruments include: The introduction of unique spirit levels in 1986 whose vials have been fixed by means of ULTRASONIC WELDING, and the high-tech manufacture of the EUROSTAR range with unbreakable laser - marked vials since 1997. All BMI’s efforts follow the intention to equip merchants with up-to-date, marketable quality measuring instruments to lead the market. BMI Super Robust R1000 6605T691060S 600mm List Price: £68.99 6605T691080S 800mm List Price: £72.99 6605T691090S 1000mm Ultrasonic welded List Price: £79.99 Round vials for reflection vials free readability Extremely sturdy 4-chamber 2mm aluminimum profile 6605T691120S 1200mm box section List Price: £93.99 6605T691180S 1800mm List Price: £119.99 Thick rubber end caps Original Super Robust Vial bubbles move 5x faster than those of ordinary levels. Therefore inaccuracies can be recognised much sooner Harrison & Clough Ltd. Tel • 0844 571 22 22 P.O. Box 9, Keighley, Fax • 0844 571 22 33 1 West Yorkshire, Email • [email protected] BD21 4EG. -
18. Workshop Equipment
WORKSHOP EQUIPMENT Innovation is our mission! GD_KP_$KT-K14-$KP-BETRIEBSEINRICHTUNG_#SALL_#APR_#V1.indb 530 16.04.2014 09:12:21 1 2 PAGE 3 WORKBENCHES 534 4 WORKBENCHES 534 - 536 5 6 BACK WALL SYSTEMS 536 7 WALL CUPBOARDS 536 8 CLOAKROOM CUPBOARD 536 9 HINGED DOOR CABINET 536 - 537 10 11 BENCH VICES 537 12 HOOK ASSORTMENT 538 - 542 13 HOLE WALL 542 - 543 14 SERVICE TROLLEYS 543 - 544 15 16 PLATFORM TROLLEY 544 17 PLATFORM 544 18 SUPPORTS 545 19 20 TRANSPORT TROLLEY 545 - 546 21 PROTECTIVE KNEELING MATS 546 22 STOOLS 546 23 AXLE STANDS 547 24 25 LIFTING TOOLS 547 26 WORKSHOP EQUIPMENT 547 27 i GD_KP_$KT-K14-$KP-BETRIEBSEINRICHTUNG_#SALL_#APR_#V1.indb 531 16.04.2014 09:12:21 WORKSHOP EQUIPMENT Multi-bonded wooden plate, waterproof and resistant to chemicals Various additional options: With surrounding metal protective edge With shelf Central locking with cylinder lock Stable steel frame Ball bearing mounted drawer runner, 100% pull-out, 35 kg load with continuous grip bar Lockable door 2 steering wheels with roller rotation brake, 125 mm roller • Workbenches suitable for any requirement. • Diverse program for an intelligent system and good overview. • Many different combinations of drawers and doors. • Different lengths from 600 mm to 2,000 mm. Fixed workbenches or workbenches with fixable ollers.r • All workbenches are made of sturdy folded sheet steel. • Surfaces are treated with an environmentally friendly powder coating. • Individual workplace design with many different combination possibilities. GD_KP_$KT-K14-$KP-BETRIEBSEINRICHTUNG_#SALL_#APR_#V1.indb 532 16.04.2014 09:12:23 Perforated plates 10 standard colours, 4 different sizes = 40 variations Available in other colours as desired. -
SATURDAY MAY 6, 2017 LIST Humboldt Antique Tool Auction May
SATURDAY MAY 6, 2017 LIST Humboldt Antique Tool Auction May 5 and May 6, 2017 Humboldt Fairgrounds 311 6th Ave. North Humboldt, IA 50548 Preview Friday 2:00 to 3:35 PM Friday Auction begins 3:35 PM Preview Saturday 8:00 to 9:35 AM Saturday Auction begins 9:35 AM The lots marked TBA will be filled with items taken the three pallets of in-the-rough gear we cleaned out of a Wisconsin barn and then put in storage in Humboldt. Included in this lot will be buggy jacks, barn pulleys, a cast iron body of the cream separator and a wide variety of other antique tools and farm tools. We will lay this gear out in beer flats and individual lots and will number them in order Friday 180-184; 234-250; and 277-290 & on Saturday: 300, 441-449; and 597-625. 1 ______ Winchester 3026C wide body jack plane, tote broken in center and needing glue, will clean to very good overall. 2 ______ Stanley #92 shoulder plane with light rust on MADE IN USA blade, very good overall. 3 ______ Belknap BLUEGRASS iron jack plane, fine except for patch of rust on bottom where it sat on a damp shelf, will clean to fine overall. 4 ______ Scarce Stanley #94 shoulder plane, the biggest one they made, this one is complete and in very good overall condition, just needs a good cleaning. 5 ______ Keen Kutter KK190 iron rabbet plane with very good original blade, nice japanning, complete with depth stop, very good overall. -
Michael Lloyd, Ph.D
Academic Forum 25 2007-08 Mathematics of a Carpenter’s Square Michael Lloyd, Ph.D. Professor of Mathematics Abstract The mathematics behind extracting square roots, the octagon scale, polygon cuts, trisecting an angle and other techniques using a carpenter's square will be discussed. Introduction The carpenter’s square was invented centuries ago, and is also called a builder’s, flat, framing, rafter, and a steel square. It was patented in 1819 by Silas Hawes, a blacksmith from South Shaftsbury, Vermont. The standard square has a 24 x 2 inch blade with a 16 x 1.5 inch tongue. Using the tables and scales that appear on the blade and the tongue is a vanishing art because of computer software, c onstruction calculators , and the availability of inexpensive p refabricated trusses. 33 Academic Forum 25 2007-08 Although practically useful, the Essex, rafter, and brace tables are not especially mathematically interesting, so they will not be discussed in this paper. 34 Academic Forum 25 2007-08 Balanced Peg Hole Some squares have a small hole drilled into them so that the square may be hung on a nail. Where should the hole be drilled so the blade will be verti cal when the square is hung ? We will derive the optimum location of the hole, x, as measured from the corn er along the edge of the blade. 35 Academic Forum 2 5 2007-08 Assume that the hole removes negligible material. The center of the blade is 1” from the left, and the center of the tongue is (2+16)/2 = 9” from the left. -
METALS REFERENCE GUIDE the Following Pages Rep- Resent Sizes, Weights, and Dimensions of Carbon Steel, Stainless Steel and Alumi- Num Available from Stock
METALS REFERENCE GUIDE The following pages rep- resent sizes, weights, and dimensions of carbon steel, stainless steel and alumi- num available from stock. With one of the largest non-mill inventories in the U.S.A., stocked in six service centers, we have what your project requires. As an added service, all of our facilities maintain pro- cessing capabilities in-house. Whether you need material punched, flame cut, plasma cut, saw cut, sheared, shot blasted, painted, or bent, we can get the job done. On behalf of the Stein fam- ily and over 500 dedicated professionals, we thank you for your past patronage and hope to serve your needs again soon. Celebrating Over 50 Years of Service! Metal Reference Guide STEEL ALUMINUM ANGLES PlatES ANGLES . .26 . .48 Bar Angles . 4 Structural Angles....5-6 ROUND BARS CHANNELS BAR GRatinG . 19-20 . .49 . .44 SHEETS DIAMOND TREAD PlatES BEAMS . .52 Hot Rolled, Cold Rolled and Galvanized.... 27-28 PIPE Junior Beams . 8 Standard Beams . 7 SQUARE BARS . .54 Wide Flange Beams. 8-15 . .20 PlatES CHANNELS STRIP . .52 Bar Channel . 18 . .21 REctanGULAR MC Shapes BARS (Car, Ship and Jr.) 17-18 . .51 Stair Stringer . .18 Standard Channels....16 REctanGULAR TUBE TUBE CONCRETE REIN- Rectangular Tube..31-33 . .53 FORCING BARS Round Tube .........34 . .21 Square Tube . .29-31 ROUND BARS EXpandED MEtal UNIVERSAL MILL . 49-50 PlatES . .25 SHEETS Flattened . 43 Grating ............43 . .50 Standard...........42 STAINLESS NEW! SQUARE TUBE Flat BARS STEEL . .53 . 22-24 Stainless Angles . .44 Stainless Channels....45 FLOOR PlatES Decimal Equivalents ...58 Stainless Flats.......45 English and Metric . -
Downloaded 10/05/21 06:35 PM UTC Be Carefully Described, with Whatever Will Only Watch for Them
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY Entered as second class matter at the Post Office, Worcester, Massachusetts, under Act of Aug. 24, 1912. Issued monthly except July and August. Annual subscription, $2.00; single copies, 20c. Address all communications to Charles F. Brooks, Secretary Blue Hill Observatory, Harvard University Milton, Mass., U. S. A. Vol. 16 MARCH, 1935 No. 3 AN OPPORTUNITY FOR AMATEUR METEOROLOGISTS Rare and beautiful optical phe- what is desired. If there is more nomena of the atmosphere are some- than one ring, the diameters of all times missed at the major observa- the rings should be measured with tories, being of somewhat local special care. The nature of the cloud occurrence. Meteorologists not con- or fog producing the corona, and the nected with such institutions have in state of the weather should be noted consequence an opportunity of con- in full. Circular halos round the sun tributing to knowledge by describing or moon should also be measured as and measuring unusual halos, coronas, accurately as possible, since it seems rainbows, as well as twilight phe- likely that halos of unusual radii are nomena and the colors of the sky. sometimes missed because the ob- This note is written with the idea server has made the not unnatural that the American Meteorological So- assumption that it is the ordinary ciety1 might thus be able to assemble 22° or 46° halo which he sees. The a large amount of accurate informa- inner diameter of such halos should tion regarding such phenomena; not be given, and also the width of the mere descriptions, but angular meas- band and a description of the colors. -
Konnect Fastening Systems® – Conversion Tables
CONVERSION TABLES VERSION 2.0 [OCTOBER 2018] AUSTRALIA: 1300 KONNECT (566 632) | www.konnectfasteningsystems.com.au NEW ZEALAND: 0508 KONNECT (566 632) | www.konnectfasteningsystems.co.nz KONNECT FASTENING SYSTEMS® – CONVERSION TABLES UNIT CONVERSION FACTORS & STANDARD THREAD LENGTH UNIT CONVERSION FACTORS MULTIPLY TO CONVERT TO MULTIPLY TO CONVERT → TO → BY → → BY MASS PRESSURE AND STRESS newton/square metre 0.035274 ounce (oz) gram (g) 28.349 1.000 pascal (Pa) 1.000 (N/m2) 2.20462 pound (lb) kilogram (kg) 0.453592 newton/square 1.000 megapascal (MPa) 1.000 tonne (metric ton or millimetre (N/mm2) 0.001 mt) kilogram (kg) 1,000 0.001 megapascal (MPa) kilopascal (kPa) 1000 0.984207 tonne UK (long ton) tonne (t) 1.01605 0.001 gigapascal (GPa) megapascal (MPa) 1000 0.001 kip (kip) pound (lb) 1,000 pound-force/square inch -6 0.006895 megapascal (MPa) 145.04 446.43x10 tonne UK (long ton) pound (lb) 2,240 (lbf/in2 or psi) kilopound per square pound-force/square inch LENGTH 0.001 1000 inch (ksi) (lbf/in2 or psi) 0.0393701 inch (in) millimetre (mm) 25.400 ton-force (UK)/square 15.444 megapascal (MPa) 0.06475 inch (tonf/in2) 3.28084 foot (ft) metre (m) 0.3048 10.000 millibar (mbar) kilopascal (kPa) 0.1000 1.09361 yard (yd) metre (m) 0.91440 33.86 millibar (mbar) inches mercury (inHg) 0.02953 0.621371 mile (mi) kilometre (km) 1.60934 pound-force/square inch thousandth of an inch 68.948 millibar (mbar) 0.014504 39.370 (thou) millimetre (mm) 0.02540 (lbf/in2 or psi) micrometre (micron or pound-force/square inch 0.001 millimetre (mm) 1,000 0.14504 -
Measurements MEGR 2299 - Motorsports Clinic I Measurements
Measurements MEGR 2299 - Motorsports Clinic I Measurements Measurement – assigning a number to an object or event to try and quantify a quality of that object. Usually based off of a standard. There are two main standards used in the shop, English and SI (or Metric). Learn both, as they are used, and you will have to convert between them. ***Make sure you know what units you are working in, and always specify your units in part drawings*** Measure Metric English Length cm in Weight (mass) kg lb Volume cm3 in3 Measurements - Length . The inch measuring system looks like this: . 1.000 = one inch. .100 = 100 hundred thousandths of an inch. .010 = ten thousandths of an inch. .001 = one thousandth of an inch. .0001 = one ten thousandths on an inch, also referred to as a “tenth” by machinists. (smallest we can measure in the shop) . .00005 or 5-5 = 50 millionths or not commonly called 500 thousandths of an inch. .000001 or 1-6= one millionth of an inch. (what the Center for Precision Metrology measures) Measurements - Length . The metric system is famous for its prefixes: craftsmanspace.com Measurements - Length .3 main tools we use in the shop to measure length . Tape measure . Calipers . Micrometer Measurements - Length .Tape Measure FatMax Tape, www.Stanleytools.com . This measuring instrument is meant for large distance measuring with accuracy up to about 0.032” (1/32”). Tape measures can come in inches, or in the metric system, or both on the same tape. Tape measures have a metal tab on the end of them. It is used to grab on the end of something or butt up against something you’re measuring.