ASME B89.1.10M pdf free download

ASME B89.1.10M pdf free download DIAL INDICATORS (FOR LINEAR MEASUREMENTS)
1 sCOPE
This Standard is intended to provide the essentialrequirements for dial indicators as a basis for mutualunderstanding between manufacturers and consumers.Described herein are various types and groups of dialindicators used to measure a linear dimension of avariation from a reference dimension.
REFERENCES
CS(E) 119-45 Dial Indicators (For Linear Measurements)Publisher: Department of Commerce,1401 ConstitutionAvenue Nw, Washington,DC 20230
A-A-2348B Indicator，Dial，Accessories，and Test SetPublisher: General Services Administration,1800FStreet Nw, Washington，DC 20405
MIL-1-8422D Indicators，Dial and Accessories
Publisher: National Technical Information Service(NTIS).5285 Port Royal Road,Springfield, VA22161
ISO R/463 Dial Gauges Reading in o.o1 mm，0.001in. and 0.0001 in.
Publisher: International Organization for Standardization(ISo)，1 rue de Varembe，Case Postale 56，CH-1211，Geneve，Switzerland/Suisse
3 GLoSSARY
dial indicator:a measuring instrument in which smalldisplacements of a spindle or a lever are magnified bysuitable mechanical means to a pointer rotating in frontof a circular dial having a graduated scale.
error of indication:the amount by which the displayedvalue on a measurement device differs from the trueinput.
4CLASSIFICATION BY TYPE
a) Type A. Dial indicators in which the spindle isparallel to the dial face (see Fig. 1).
b) Type B. Dial indicators in which the spindle is
perpendicular to the dial face (see Fig. 2).
(c) Type C. Dial indicators in which the measuringcontact member is a lever.These are also known asdial test indicators (see Fig. 3).
5 CLASSIFICATION BY GROUP
Group members are assigned in accordance withnominal bezel diameter and apply only to Type A andBindicators (Table 1). For Type C indicators，whichare available in a variety of sizes and designs,refer tothe various manufacturers’ standards. Group descriptionsare as follows:
ia) Group 0. Dial indicators having nominal bezeldiameters from 1 in.(25 mm) up to and including 13/8in. (35 mm).
(b) Group 1. Dial indicators having nominal bezeldiameters from above 13/5 in. (35 mm) up to andincluding 2 in. (50 mm).
c) Group 2. Dial indicators having nominal bezeldiameters from above 2 in. (50 mm) up to and including23/in. (60 mm).
d) Group 3. Dial indicators having nominal bezeldiameters from above 23/ in. (60mm) up to andincluding 3 in. (76 mm).
(e) Group 4. Dial indicators having nominal bezeldiameters from above 3 in. (76 mm) up to and including33/4in. (95 mm).
6 DIAL GRADUATION VALUES
All types of indicators shall have least graduationsarranged either in four classes of inch values (i.e.,0.00005 in.，0.0001 in.， 0.0005 in.，and 0.001 in.) orin four classes of metric values (i.e.，0.001 mm,0.002mm,0.01 mm,and 0.02 mm).
NOTE: Other valucs for graduations are sometimes used in industry.The supplier and the customer should agree on the determination ofthe maximum permissible error for dial indicators with graduationsnot mentioned in this Standard.
7 NOMENCLATURE
For the purposes of this Standard, the nomenclaturein Figs. 1 through 6 shall apply.