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Micro-Ruler MR-1 a NPL (NIST Counterpart in the U.K.)Traceable Certified Reference Material
Micro-Ruler MR-1 A NPL (NIST counterpart in the U.K.)Traceable Certified Reference Material . ATraceable “Micro-Ruler”. Markings are all on one side. Mirror image markings are provided so right reading numbers are always seen. The minimum increment is 0.01mm. The circles (diameter) and square boxes (side length) are 0.02, 0.05, 0.10, 0.50, 1.00, 2.00 and 5.00mm. 150mm OVERALL LENGTH 150mm uncertainty: ±0.0025mm, 0-10mm: ±0.0005mm) 0.01mm INCREMENTS, SQUARES & CIRCLES UP TO 5mm TED PELLA, INC. Microscopy Products for Science and Industry P. O. Box 492477 Redding, CA 96049-2477 Phone: 530-243-2200 or 800-237-3526 (USA) • FAX: 530-243-3761 [email protected] www.tedpella.com DOES THE WORLD NEED A TRACEABLE RULER? The MR-1 is labeled in mm. Its overall scale extends According to ISO, traceable measurements shall be over 150mm with 0.01mm increments. The ruler is designed to be viewed from either side as the markings made when products require the dimensions to be are both right reading and mirror images. This allows known to a specified uncertainty. These measurements the ruler marking to be placed in direct contact with the shall be made with a traceable ruler or micrometer. For sample, avoiding parallax errors. Independent of the magnification to be traceable the image and object size ruler orientation, the scale can be read correctly. There is must be measured with calibration standards that have a common scale with the finest (0.01mm) markings to traceable dimensions. read. We measure and certify pitch (the distance between repeating parallel lines using center-to-center or edge-to- edge spacing. -
170928 Kapro Catalogue.Pdf
About Kapro Kapro is a leading manufacturer and developer of innovative hand tools for the professional and DIY markets. Kapro make the industry’s finest quality spirit levels, laser levels, layout marking and measuring tools. The company has built a reputation as the industry’s foremost innovator, and is renowned for its quality products, outstanding service, added value and cutting-edge designs. Global Distribution Network ABOUT KAPRO Kapro is a major global player in its category. Headquartered in Kadarim Israel, Kapro operates facilities in Israel, China and the USA – all wholly owned by Kapro Industries. Our network of distribution partners has created a leading market presence in over 60 countries, throughout Europe, the Americas and Asia, and in Australasia and Africa. Innovation & Design Kapro’s systematic approach to innovation has given the market some of its most ground-breaking features and products. Our market-changing patented designs include the Plumb Site® Dual-View™ vial, Optivision™ Red, Postrite® Folding Post Level and Topgrade™ Gradient Level. Kapro’s Plumb Site® Dual View™ vial is the only level feature to provide a front-on view of the plumb vial, eliminating parallax error as well as the neck and back strain that usually accompany vertical leveling jobs. In 2010, Kapro introduced Optivision™ Red that creates a strong colour definition around the spirit levels horizontal bubble, making it the clearest and most visible vial available. To date, Kapro has registered over 100 patents throughout the world on its products and features Kapro’s unique designs are highlighted by their sleek, stand-out red look, eye-catching graphics, simplicity of design and innovative packaging. -
Coaches Manual
Lviv State University of Physical Culture named after Ivan Boberskyj Department of shooting and technical sports Subject "Theory and Methodology of the Selected Sport and Improvement of Sports Skill – archery" for 4 courses students LECTURE: "TERMINOLOGY / GLOSSARY IN ARCHERY" by prof. Bogdan Vynogradskyi Lviv – 2020 TERMINOLOGY / GLOSSARY Actual draw length: The personal draw length Barrelled arrow: An arrow that has a greater of the archer measured at full draw, from the cross section in the middle and tapers down at bottom of the slot in the nock to the pivot point both ends. of the grip plus 1 3/4 inch (45mm), which is the Basic technique: The fundamental technique of back edge (far side of the bow) on most bows. shooting a bow and arrow. Usually the style Actual arrow length: The personal arrow taught during the introduction to archery, length of the archer, measured from the bottom forming the basis for consistent shooting. slot of the nock to the end of the shaft (this Belly (of bow): The surface of the bow facing measurement does not include the point/pile); the archer during shooting. Also known as the with this end of the shaft at 1 inch (25mm) in “face” of the bow. front of the vertical passing through the deepest point of the bow grip or the arrow rest. Black: The fourth scoring colour on the Indoor/Outdoor target face, when counting from Actual draw weight: The energy required to the centre of the target. draw the bow to the actual draw length (commonly measured in pounds). -
Verification Regulation of Steel Ruler
ITTC – Recommended 7.6-02-04 Procedures and guidelines Page 1 of 15 Effective Date Revision Calibration of Micrometers 2002 00 ITTC Quality System Manual Sample Work Instructions Work Instructions Calibration of Micrometers 7.6 Control of Inspection, Measuring and Test Equipment 7.6-02 Sample Work Instructions 7.6-02-04 Calibration of Micrometers Updated / Edited by Approved Quality Systems Group of the 28th ITTC 23rd ITTC 2002 Date: 07/2017 Date: 09/2002 ITTC – Recommended 7.6-02-04 Procedures and guidelines Page 2 of 15 Effective Date Revision Calibration of Micrometers 2002 00 Table of Contents 1. PURPOSE .............................................. 4 4.6 MEASURING FORCE ......................... 9 4.6.1 Requirements: ............................... 9 2. INTRODUCTION ................................. 4 4.6.2 Calibration Method: ..................... 9 3. SUBJECT AND CONDITION OF 4.7 WIDTH AND WIDTH DIFFERENCE CALIBRATION .................................... 4 OF LINES .............................................. 9 3.1 SUBJECT AND MAIN TOOLS OF 4.7.1 Requirements ................................ 9 CALIBRATION .................................... 4 4.7.2 Calibration Method ...................... 9 3.2 CALIBRATION CONDITIONS .......... 5 4.8 RELATIVE POSITION OF INDICATOR NEEDLE AND DIAL.. 10 4. TECHNICAL REQUIREMENTS AND CALIBRATION METHOD ................. 7 4.8.1 Requirements .............................. 10 4.8.2 Calibration Method: ................... 10 4.1 EXTERIOR ............................................ 7 4.9 DISTANCE -
Standard Scales SERIES 182 — Made of Low-Expansion Glass
Standard Scales SERIES 182 — Made of Low-Expansion Glass FEATURES • High-precision glass scales manufactured under Mitutoyo’s leading-edge Linear Scale 182-502-50 production technology. Technical Data • High accuracy is guaranteed to be used as Accuracy (at 20°C): (0.5+L/1000)µm, a standard for calibrating graduated scales. L = Measured length (mm) Glass material: Low expansion glass Thermal expansion coefficient: 8x10-8/K Graduation: 1mm 182-501-50 Graduation thickness: 4µm Mass: 0.75kg (250mm), 1.8kg (500mm) DIMENSIONS SPECIFICATIONS Unit: mm Metric À>`Õ>Ì ,>}i / £ Range Order No. L W T 250mm 182-501-50 280mm 20mm 10mm { 7 250mm 182-501-60* 280mm 20mm 10mm Ó À>`Õ>ÌÊÌ ViÃÃ\Ê{ 500mm 182-502-50 530mm 30mm 20mm x }iÌÊ>ÀÊÌ ViÃÃ\ÊÓä 500mm 182-502-60* 530mm 30mm 20mm *with English JCSS certificate. Working Standard Scales SERIES 182 FEATURES 182-525-10 • High-precision glass scales 182-523-10 manufactured under Mitutoyo’s leading-edge linear scale 182-522-10 Technical Data production technology. Accuracy (at 20°C): (1.5+2L/1000)µm, • Ideal for checking magnification 182-513-10 L = Measured length (mm) accuracy of profile projectors Glass material: Sodium glass Thermal expansion coefficient: 8.5x10-6/K and microscopes, and the table Graduation: 0.1mm (thickness: 20µm) feeding accuracy of measuring 0.5mm (thickness: 50µm) equipment. 1mm (thickness: 100µm) DIMENSIONS £ä Unit: mm À>`Õ>Ì £ ä°£Ê}À>`Õ>Ì ,i}i Ó°Ç ä°£Ê}À>`Õ>Ì SPECIFICATIONS Ó°x Metric ΰx ÓÓ x Range Order No. -
MICHIGAN STATE COLLEGE Paul W
A STUDY OF RECENT DEVELOPMENTS AND INVENTIONS IN ENGINEERING INSTRUMENTS Thai: for III. Dean. of I. S. MICHIGAN STATE COLLEGE Paul W. Hoynigor I948 This]: _ C./ SUPP! '3' Nagy NIH: LJWIHL WA KOF BOOK A STUDY OF RECENT DEVELOPMENTS AND INVENTIONS IN ENGINEERING’INSIRUMENTS A Thesis Submitted to The Faculty of MICHIGAN‘STATE COLLEGE OF AGRICULTURE AND.APPLIED SCIENCE by Paul W. Heyniger Candidate for the Degree of Batchelor of Science June 1948 \. HE-UI: PREFACE This Thesis is submitted to the faculty of Michigan State College as one of the requirements for a B. S. De- gree in Civil Engineering.' At this time,I Iish to express my appreciation to c. M. Cade, Professor of Civil Engineering at Michigan State Collegeafor his assistance throughout the course and to the manufacturers,vhose products are represented, for their help by freely giving of the data used in this paper. In preparing the laterial used in this thesis, it was the authors at: to point out new develop-ants on existing instruments and recent inventions or engineer- ing equipment used principally by the Civil Engineer. 20 6052 TAEEE OF CONTENTS Chapter One Page Introduction B. Drafting Equipment ----------------------- 13 Chapter Two Telescopic Inprovenents A. Glass Reticles .......................... -32 B. Coated Lenses .......................... --J.B Chapter three The Tilting Level- ............................ -33 Chapter rear The First One-Second.Anerican Optical 28 “00d011 ‘6- -------------------------- e- --------- Chapter rive Chapter Six The Latest Type Altineter ----- - ................ 5.5 TABLE OF CONTENTS , Chapter Seven Page The Most Recent Drafting Machine ........... -39.--- Chapter Eight Chapter Nine SmOnnB By Radar ....... - ------------------ In”.-- Chapter Ten Conclusion ------------ - ----- -. -
1. Hand Tools 3. Related Tools 4. Chisels 5. Hammer 6. Saw Terminology 7. Pliers Introduction
1 1. Hand Tools 2. Types 2.1 Hand tools 2.2 Hammer Drill 2.3 Rotary hammer drill 2.4 Cordless drills 2.5 Drill press 2.6 Geared head drill 2.7 Radial arm drill 2.8 Mill drill 3. Related tools 4. Chisels 4.1. Types 4.1.1 Woodworking chisels 4.1.1.1 Lathe tools 4.2 Metalworking chisels 4.2.1 Cold chisel 4.2.2 Hardy chisel 4.3 Stone chisels 4.4 Masonry chisels 4.4.1 Joint chisel 5. Hammer 5.1 Basic design and variations 5.2 The physics of hammering 5.2.1 Hammer as a force amplifier 5.2.2 Effect of the head's mass 5.2.3 Effect of the handle 5.3 War hammers 5.4 Symbolic hammers 6. Saw terminology 6.1 Types of saws 6.1.1 Hand saws 6.1.2. Back saws 6.1.3 Mechanically powered saws 6.1.4. Circular blade saws 6.1.5. Reciprocating blade saws 6.1.6..Continuous band 6.2. Types of saw blades and the cuts they make 6.3. Materials used for saws 7. Pliers Introduction 7.1. Design 7.2.Common types 7.2.1 Gripping pliers (used to improve grip) 7.2 2.Cutting pliers (used to sever or pinch off) 2 7.2.3 Crimping pliers 7.2.4 Rotational pliers 8. Common wrenches / spanners 8.1 Other general wrenches / spanners 8.2. Spe cialized wrenches / spanners 8.3. Spanners in popular culture 9. Hacksaw, surface plate, surface gauge, , vee-block, files 10. -
FIELD EXTENSIONS and the CLASSICAL COMPASS and STRAIGHT-EDGE CONSTRUCTIONS 1. Introduction to the Classical Geometric Problems 1
FIELD EXTENSIONS AND THE CLASSICAL COMPASS AND STRAIGHT-EDGE CONSTRUCTIONS WINSTON GAO Abstract. This paper will introduce the reader to field extensions at a rudi- mentary level and then pursue the subject further by looking to its applications in a discussion of some constructibility issues in the classical straight-edge and compass problems. Field extensions, especially their degrees are explored at an introductory level. Properties of minimal polynomials are discussed to this end. The paper ends with geometric problems and the construction of polygons which have their proofs in the roots of field theory. Contents 1. introduction to the classical geometric problems 1 2. fields, field extensions, and preliminaries 2 3. geometric problems 5 4. constructing regular polygons 8 Acknowledgments 9 References 9 1. Introduction to the Classical Geometric Problems One very important and interesting set of problems within classical Euclidean ge- ometry is the set of compass and straight-edge questions. Basically, these questions deal with what is and is not constructible with only an idealized ruler and compass. The ruler has no markings (hence technically a straight-edge) has infinite length, and zero width. The compass can be extended to infinite distance and is assumed to collapse when lifted from the paper (a restriction that we shall see is irrelevant). Given these, we then study the set of constructible elements. However, while it is interesting to note what kinds objects we can create, it is far less straight forward to show that certain objects are impossible to create with these tools. Three famous problems that we will investigate will be the squaring the circle, doubling the cube, and trisecting an angle. -
Verification Regulation of Steel Ruler
ITTC – Recommended 7.6 - 02- 01 Procedures and Guidelines Page 1 of 7 Sample Work Instructions Effective Date Revision 2002 00 Calibration of Steel Rulers Table of Contents PURPOSE…………………………………...2 Edges………………………………….4 3.5.1 Requirements ...............................4 WORK INSTRUCTION……………………2 3.5.2 Method of Calibration..................4 3.6 Thickness of the Side Edge………….5 1 Introduction…………………………2 3.6.1 Method of Calibration..................5 2 Items and Condition of Calibration…..2 3.7 Arc Radius at the Intersecting Position of the End and the Side 3 Technical Requirements and Calibration Edges………………………………….5 Method……………………………………….2 3.7.1 Requirements ...............................5 3.1 Exterior………………………………2 3.7.2 Method Calibration......................5 3.1.1 Requirements ...............................2 3.8 Width and Difference Between the 3.2 Flatness of ruler face………………..3 Lines…………………………………..5 3.2.1 Requirements ...............................3 3.8.1 Requirements ...............................5 3.2.2 Method of Calibration..................4 3.8.2 Method of Calibration..................5 3.3 Elasticity……………………………..4 3.9 Error of Indication…………………..5 3.3.1 Requirements ...............................4 3.9.1 Requirements ...............................5 3.3.2 Method of Calibration..................4 3.9.2 Method of Calibration..................6 3.4 Linearity of the Ruler End and Side 4 Treatment of the Calibration Result and Edges………………………………….4 the Calibration Period………………….7 3.4.1 Requirements ...............................4 -
Marking Gauge
Online Extra accurate layouts with a Marking Gauge When it comes to fast and accurate layouts, this traditional tool will more than earns its keep in the woodworking shop. Thumb If I were to make a list of the If you take a look at the various the amount of brass details used screw most-used tools in my shop, the marking gauges being sold today, in the construction. The more marking gauge would be you’ll notice two distinct types. expensive gauges have brass thumb near the top. Even with the Some use a steel pin to scribe a line myriad of rulers, calipers, while others use a flat blade. This and digital measuring second type is often called a “cut- devices that are available ting gauge” because the blade slices today, it’s hard to beat this the wood fibers rather than tearing simple tool for accuracy them, like the pin-style marking and ease of use. gauges (see photos at right). Of the two, I prefer the blade-style gauge. Blade Wedge It scores a cleaner, crisper line. DESIGN. A marking gauge is one of those simple tools whose basic design hasn’t changed much over the years. It has a beam and an adjustable fence (or stock) that is Brass wear strip held in place with a thumb screw, or sometimes, a wedge. Fence The only other differences you’re (or stock) Beam likely to find between the various { A marking gauge (top) tears gauges on the market have to do its way across the wood, while with the level of fit and finish and a cutting gauge scores a line. -
Drafting Machines and Parts Threof from Japan
DRAFTING MACHINES AND PARTS THEREOF FROM JAPAN Determination of the Commission in Investigation No. 731-T A-432 (Final} Under the Tariff Act of 1930, Together With the Information Obtained in the Investigation USITC PUBLICATION 2247 DECEMBER 1989 United States International Trade Commission Washington, DC 20436 UNITED STATES INTERNATIONAL TRADE COMMISSION COMMISSIONERS Anne E. Brunsdale, Chairman Ronald A. Cass, Vice Chairman Alfred E. Eckes Seeley G. Lodwick David B. Rohr Don E. Newquist Staff assigned: Elizabeth Haines, Investigator Catherine DeFilippo, Economist Marshall Wade, Financial Analyst Ruben Moller, Industry Analyst William Kane, Attorney George Deyman, Supervisory Investigator Address all communications to Kenneth R. Mason, Secretary to the Commission United States International Trade Commission Washington, DC 20436 CONTENTS Determination and Views of the Commission: Determination ..........•........... ~. .... 1 Views of the Conunission •••••••••••••.•••• ............. 3 Views of Chairman Anne E. Brunsdale •••••• . • . .. .. ... .. ... 21 Additional Views of Vice Chairman Ronald A. Cass •••• ....... • _35 Additional Views of Conunissioner Eckes ••••• .. • ......... ............ 67 Information obtained in the investigation: Introduction •••••• .................. ·• ........ A-1 Background ••••••••• ..... •· .. A-2 Nature and extent of sales at LTFV •••• .............. ............ A"."'2 The product: Description and uses .••••••••••• . .. ............. A-3 Track drafting machine •••••••. .. .. ..... ...... A-3 Band-and-pulley -
Specification of Spirit Level (For Use in Box Type Gauge Cum Level)
109 317359/2020/O/o PED/TMM/RDSO ISO: 9001-2015 Document No.: TM-52 Revision 01 Date Effective From:--/--/---- Document Title: Specification of Spirit Level (For use in Box type gauge cum level) SPECIFICATION OF SPIRIT LEVEL (For use in Box type gauge cum level) (No.TM-52 Dt.24.05.2000) First Revision, October-2020 Track Machines & Monitoring Directorate RESEARCH DESIGNS AND STANDARDS ORGANISATION Manak Nagar, Lucknow-226011 JRE/SSE/SSRE ARE/DTM/EDTM PEDTM Page 1 of 8 Prepared By: Checked By: Issued By 110 317359/2020/O/o PED/TMM/RDSO ISO: 9001-2015 Document No.: TM-52 Revision 01 Date Effective From:--/--/---- Document Title: Specification of Spirit Level (For use in Box type gauge cum level) 1.0 SCOPE: This specification covers the essential dimensional, functional and material characteristics with method of testing and accuracy of the spirit level. The spirit level is used to define a reference horizontal plane to compare the horizontality of the base of the spirit level with the plane containing the touching surfaces of the rail seatings of the gauge-cum-level. 1.1 Preference to make in India: compliance of the instruction contained in public procurement (preference to make in India) order -2017 “Make in India” shall be ensured or latest instructions issued on subject shall be ensured. 1.2 All the provisions contained in RDSO’s ISO procedures laid down in Document No. QO- D-8.1-11 dated 12.09.2018 (titled Vendor – Changes in approved status”), subsequent versions / amendments thereof shall be binding, and applicable on the successful manufacturers/suppliers in the contracts floated by Railways to maintain quality of products supplied to Railways.