HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

JJF 1917-2021 English PDF

US$299.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1917-2021: (Microscopic ruler calibration specification)
Status: Valid
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJF 1917-2021English299 Add to Cart 3 days [Need to translate] (Microscopic ruler calibration specification) Valid JJF 1917-2021

PDF similar to JJF 1917-2021


Standard similar to JJF 1917-2021

JJF 1951   JJF 1561   JJF 1406   JJF 1914   JJF 1915   JJF 1913   

Basic data

Standard ID JJF 1917-2021 (JJF1917-2021)
Description (Translated English) (Microscopic ruler calibration specification)
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A52
Word Count Estimation 15,177
Issuing agency(ies) State Administration for Market Regulation

JJF 1917-2021: (Microscopic ruler calibration specification)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Microscopic ruler calibration specification) National Metrology Technical Specification of the People's Republic of China Microscale Calibration Specifications Published on 2021-07-28 2022-01-28 Implementation Released by the State Administration for Market Regulation Microscale Calibration Specifications Focal Point. National Technical Committee on Geometric Length Measurement Main drafting unit. Shanxi Institute of Metrology Jiangsu Institute of Metrology China Institute of Metrology Participating in the drafting unit. Zhejiang Institute of Metrology Guizhou Institute of Metrology This specification is interpreted by the National Technical Committee of Geometry and Length Measurement The main drafters of this specification. Yan Hao (Shanxi Institute of Metrology) Wang Xiaofei (Jiangsu Institute of Metrology) Sun Shuanghua (China Institute of Metrology) Xue Zi (China Institute of Metrology) Yang Weimin (Shanxi Institute of Metrology) Participating drafters. Yan Junfang (Shanxi Institute of Metrology) Mao Zhenhua (Zhejiang Institute of Metrology) Lv Xiaojie (Guizhou Institute of Metrology)

content

Introduction (Ⅱ) 1 Scope(1) 2 Overview(1) 3 Metrology Characteristics(2) 3.1 Line spacing (2) 3.2 Grid spacing(2) 3.3 Angle(2) 3.4 Diameter(2) 4 Calibration Conditions(2) 4.1 Environmental conditions (2) 4.2 Standard device for calibration (3) 5 Calibration items and calibration methods (3) 5.1 General rules for calibration (3) 5.2 Line spacing (3) 5.3 Grid spacing(4) 5.4 Angle(4) 5.5 Diameter(4) 6 Processing of calibration results (4) 7 Recalibration interval(5) Appendix A Example of Measurement Uncertainty Evaluation of Micro-Scale Line Pitch (1) (6) Appendix B Example of Measurement Uncertainty Evaluation of Micro-Scale Line Pitch (2) (8) Appendix C Standard Certificate Content (10)

Introduction

JJF 1071 "Rules for the Compilation of National Metrology Calibration Specifications", JJF 1001 "General Metrology Terms and Definitions" and JJF 1059.1 "Assessment and Representation of Measurement Uncertainty" together constitute the basic series supporting the formulation of this specification specification. The purpose of formulating this specification is mainly to solve GB/T 2985-2008 "Biological Microscope", JB/T 10077- 1999 "Metallographic Microscope" in line grain ruler and JJG571-2004 "Reading and measuring microscope", JJF 1402- 2013 "Biological Microscope Calibration Specification", JJF 1914-2021 "Metallographic Microscope Calibration Specification" in line standard calibration. The line rulers, line standards, etc. in the above standards, regulations and calibration specifications are collectively referred to as microscopic standards in this specification. Ruler, classified in JJF 1022-2014 "Measuring Standard Nomenclature and Classification Code" "Microscopic Ruler Standard Device" (code. 01213300). This specification is published for the first time. Microscale Calibration Specifications

1 Scope

This specification applies to the calibration of one-dimensional or two-dimensional microscopic rulers with a reticle width of 0.3 μm and above.

2 Overview

Micro rulers are used to calibrate optical microscopes such as biological microscopes, metallographic microscopes, reading microscopes and their accessories. A set of one-dimensional or two-dimensional standard instruments for technical parameters such as software indication and magnification, also refers to such instruments used to observe and measure microscopic Image of eyepiece ruler. Microscopic rulers contain one or more geometric patterns such as dots, lines, circles, rectangles, crosses, etc. Contains information such as width, spacing, diameter, area, and angle. Microscopic rulers are usually made of transparent glass or metal Substrate; according to the manufacturing method, it is divided into groove, photocopying and etching process manufacturing; according to the pattern presentation method, it is divided into transparent According to the application, it is divided into stage micrometer, eyepiece micrometer, etc. Stage micrometers are glass slides that contain various geometric patterns. The usual stage micrometer has a long center (1~2)mm micrometer, reticle interval (100~600) lines/mm. Indication error for calibrating microscopes, Resolution, magnification, eyepiece reticle accuracy and microscopic measurement software accuracy. The eyepiece micrometer is a circular glass slide with central lines, crosses, grids, circles, etc., which is installed in the microscope eyepiece. The imaging surface of the object is used to measure or calibrate the size of the microscopic image. The geometric pattern of a typical microscale is shown in Figure 1. (a) Combined micrometer Figure 1 Schematic diagram of the microscopic ruler

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1917-2021_English be delivered?

Answer: Upon your order, we will start to translate JJF 1917-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1917-2021_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1917-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.