KR200265101Y1 - Vernier Calipers for Measuring Nominal Diameter - Google Patents

Vernier Calipers for Measuring Nominal Diameter Download PDF

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Publication number
KR200265101Y1
KR200265101Y1 KR2019970034545U KR19970034545U KR200265101Y1 KR 200265101 Y1 KR200265101 Y1 KR 200265101Y1 KR 2019970034545 U KR2019970034545 U KR 2019970034545U KR 19970034545 U KR19970034545 U KR 19970034545U KR 200265101 Y1 KR200265101 Y1 KR 200265101Y1
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South Korea
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vernier caliper
nominal diameter
jaw
measure
vernier
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KR2019970034545U
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Korean (ko)
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KR19990021056U (en
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석민홍
최병학
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이구택
포항종합제철 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/20—Slide gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/002—Details
    • G01B3/004—Scales; Graduations
    • G01B3/006—Scales; Graduations having both coarse and fine graduation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/22—Feeler-pin gauges, e.g. dial gauges
    • G01B3/24—Feeler-pin gauges, e.g. dial gauges with open yoke, i.e. calipers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
    • G01B5/04—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G01B5/046—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring width
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
    • G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
    • G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges
    • G01B5/063—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges provided with a slide which may be moved along a vertical support by means of a micrometer screw

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

본 고안은 배관이나 게이지 접속부의 호칭경을 측정할 수 있는 버니어 캘리퍼스(Vernier Calipers)의 개선에 관한 것으로 보다 상세하게는 삼점지지측정원리를 이용하여 원호길이 및 외측죠(11)의 길이에 따라 구해진 삼점지지표(31)가 기존 수치의 상부 또는 후면에 표시되어 있는 것을 특징으로 하는 호칭경을 측정할 수 있는 버니어 캘리퍼스에 관한 것이며 또한, 삼점지지측정원리를 이용할 수 있도록 상기 버니어 캘리퍼스의 내측죠(12-1) 방향을 반대로 가공하거나 깊이죠(13)의 일단부를 가공한 것을 특징으로 하는 호칭경을 측정할 수 있는 버니어 캘리퍼스에 관한 것이다.The present invention relates to an improvement of Vernier Calipers that can measure the nominal diameter of pipe or gauge connection. More specifically, three points obtained according to the length of the arc and the length of the outer jaw (11) using the three-point support measurement principle. The support table 31 relates to a vernier caliper capable of measuring a nominal diameter, characterized in that it is displayed on the upper or rear side of an existing value, and also the inner jaw 12-1 of the vernier caliper to use the three-point support measuring principle. It is related with the vernier caliper which can measure the nominal diameter characterized by processing reverse direction) or the one end part of the depth jaw (13).

상기와 같은 본 고안에 의하여 버니어 캘리퍼스의 일반적인 측정작업과 함께 각종 배관의 호칭경을 간단하게 측정할 수 있어 배관에 대한 전문지식이 없어도 배관 또는 게이지 접속부의 호칭경 선정시 착오를 방지하고 시간을 절약할 수 있다.According to the present invention as described above, it is possible to easily measure the nominal diameters of various pipes together with the general measurement work of the vernier calipers, so that no error in the selection of the nominal diameters of the pipe or gauge connection part can be saved without time without the expert knowledge of the pipes have.

Description

호칭경을 측정할 수 있는 버니어 캘리퍼스Vernier Calipers for Measuring Nominal Diameter

본 고안은 배관이나 게이지 접속부의 호칭경을 측정할 수 있는 버니어캘리퍼스(Vernier Calipers)에 관한 것으로 보다 상세하게는 버니어 캘리퍼스에 의해 측정된 배관의 원호길이 및 죠의 길이를 삼점지지측정원리에 적용 계산된 삼점지지표를 버니어 캘리퍼스의 수치 상부 또는 후면에 표시해 놓은 것을 특징으로 하는 호칭경을 측정할 수 있는 버니어 캘리퍼스에 관한 것이다.The present invention relates to a vernier caliper that can measure the nominal diameter of a pipe or gauge connection. More specifically, the arc length and jaw length of the pipe measured by the vernier caliper are applied to the three-point support measurement principle. It relates to a vernier caliper that can measure the nominal diameter, characterized in that the three-point indicator is displayed on the upper or rear surface of the vernier caliper.

산업현장이나 건축용으로 사용되고 있는 각종 배관류나 게이지 접속부는 이미 정해져 있는 규격품을 생산, 사용하고 있다.Various pipes and gauge connections used in industrial sites and constructions produce and use standard products.

이러한 배관의 규격이나 게이지 접속부의 규격을 통칭할 때 흔히 호칭경을 사용하고 있으며 종래에는 이러한 배관이나 게이 접속부의 호칭경을 알기 위해서 눈대중이나 일반 줄자로 둘레를 측정하여 계산에 의해 산출된 직경값을 도표에서 찾아 호칭경을 알아내는 방법이 사용되었다.Commonly, nominal diameter is used to refer to the size of the pipe or the gauge connection part.In order to know the nominal diameter of the pipe or the gay connection part, the diameter value calculated by the calculation is measured by measuring the circumference with an eye mass or a common tape measure. A method of finding and identifying the title was used.

그러나 상기와 같이 작업자의 눈대중에 의한 방법은 배관 및 게이지 접속부의 정확한 호칭경을 기대하기 어렵고 계산에 의한 방법은 과다한 시간이 소요되며 매우 번거롭고 귀찮은 면을 내포하고 있었다.However, as described above, the method by the eye mass of the operator is difficult to expect the exact nominal diameter of the pipe and gauge connection, and the method by the calculation takes too much time and contains very troublesome and troublesome aspects.

또한, 원둘레의 공식(π×지름)을 이용하여 줄자의 1눈금을 π씩 표기하여 원둘레의 직경을 측정하는 방법은 배고나이나 커플링(Coupling) 등의 직경을 비교적 간단하고 정밀하게 측정할 수 있으나 직경이 클수록 줄자의 길이도 길어져야 하고 일반적으로 배관의 경우 지하에 매설되거나 산업현장에서는 높은 위치에 설치되어 있으므로 매설된 부분을 파내거나 2∼3인이 함께 측정해야 하는 번거로움이 있었다.In addition, the method of measuring the diameter of the circumference by measuring the one circumference of the tape measure by π by using the formula of the circumference (π × diameter) can measure the diameter of the hunger, coupling, etc. relatively simply and precisely. However, the larger the diameter, the longer the length of the tape measure was. In general, the pipe was buried underground or installed in a high position at an industrial site. Therefore, it was troublesome to dig out the buried part or measure it with two or three people.

상기와 같은 문제점을 해결하기 위하여 본 고안은 직경와 원호의 길이에 대한 식을 기존에 길이측정에 사용되는 버니어 캘리퍼스(Vernier Calipers)에 적용하여 배관등의 호칭경을 간단하게 측정할 수 있는 버니어 캘리퍼스를 이용한 호칭경 측정방법을 제공하는 것을 그 목적으로 한다.In order to solve the above problems, the present invention applies a formula for the diameter and the length of the arc to the vernier calipers used for measuring the length of the existing vernier calipers that can easily measure the nominal diameter of the pipe, etc. Its purpose is to provide a nominal diameter measuring method.

도 1a는 본 고안에 적용된 삼점지지 측정원리를 나타내는 개략도이고, 도 1b는 본 고안에 의해 버니어 캘리퍼스를 이용하여 배관의 호칭경을 측정하는 상태도,Figure 1a is a schematic diagram showing the three-point support measuring principle applied to the present invention, Figure 1b is a state diagram for measuring the nominal diameter of the pipe using the vernier caliper according to the present invention,

도 2는 본 고안에 의해 기존 버니어캘리퍼스의 내측죠의 방향이 바뀐 버니어 캘리퍼스의 개략도,Figure 2 is a schematic view of the vernier caliper has changed the direction of the inner jaw of the existing vernier caliper by the present invention

도 3은 본 고안에 의해 개선된 버니어 캘리퍼스의 깊이죠의 상태도이다.3 is a state diagram of the depth jaw of the vernier caliper improved by the present invention.

<도면의 주요한 부분에 사용된 부호의 설명><Description of the code used in the main part of the drawing>

1,1-1,1-2 : 버니어 캘리퍼스(Vernier Calipers), 11 : 외측죠,1,1-1,1-2: Vernier Calipers, 11: Outer jaw,

12, 12-1 : 내측죠, 13 : 깊이죠, 13-1 : 절곡부, 21,21-1 : 기준선,12, 12-1: inner jaw, 13: depth jaw, 13-1: bend, 21, 21-1: reference line,

31 : 삼점지지표31: three-point support

본 고안은 상기와 같은 목적을 달성하기 위해 삼점지지 측정원리를 이용하여 측정하고자 하는 배관등의 원호길이 그리고 측정하는 버니어 캘리퍼스의 외측죠의 길이에 의해 구해진 삼점지지표가 기존 수치 상부 또는 후면에 표시되어 있는 것을 특징으로 하는 호칭경을 측정할 수 있는 버니어 캘리퍼스를 제공한다.In order to accomplish the above object, the three-point support table obtained by the arc length of the pipe to be measured and the length of the outer jaw of the vernier caliper to be measured by using the three-point support measuring principle is displayed on the upper or rear side of the existing value. There is provided a vernier caliper capable of measuring a nominal diameter characterized in that there is.

또한, 본 고안은 상기 버니어캘리퍼스의 내측죠 방향을 반대로 가공하거나 깊이죠의 단부를 가공하여 호칭경을 측정할 수 있는 버니어 캘리퍼스를 제공한다.In addition, the present invention provides a vernier caliper capable of measuring the nominal diameter by processing the inner jaw direction of the vernier caliper reversely or by processing the end of the depth jaw.

이하, 본 고안을 도면을 참조하여 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail with reference to the drawings.

도 1은 본 고안에 의해 버니어 캘리퍼스를 이용하여 배관의 호칭경을 측정하는 상태도 및 본 고안에 적용된 삼점지지 측정원리를 나타내는 개략도이고, 도 2는 본 고안에 의해 기존 버니어캘리퍼스의 내측죠의 방향이 바뀐 버니어 캘리퍼스의 개략도이고, 도 3은 본 고안에 의해 개선된 버니어 캘리퍼스의 깊이죠의 상태도이다.Figure 1 is a schematic diagram showing a state diagram for measuring the nominal diameter of the pipe using the vernier caliper according to the present invention and the three-point support measuring principle applied to the present invention, Figure 2 is a direction of the inner jaw of the existing vernier caliper by the present invention 3 is a schematic view of the changed vernier caliper, and FIG. 3 is a state diagram of the depth jaw of the vernier caliper improved by the present invention.

먼저 본 고안은 도 1에 나타낸 바와 같이 삼점지지 측정원리를 나타내는 아래 식을 이용하였다.First, the present invention used the following equation representing the three-point support measurement principle as shown in FIG.

C = 2 √h(r-h) ………… (1)C = 2 √h (r-h)... … … … (One)

여기서 C는 원호의 길이, r은 반지름, h는 a부터 b까지의 거리이다.Where C is the length of the arc, r is the radius, and h is the distance from a to b.

즉, C는 버니어 캘리퍼스(1)의 외측죠(11)에 의한 측정치, h는 외측죠(11)의 길이 그리고 r은 측정하고자 하는 배관의 외경으로 표시할 수 있다.That is, C can be expressed by the measured value by the outer jaw 11 of the vernier caliper 1, h is the length of the outer jaw 11 and r is the outer diameter of the pipe to be measured.

또한, 도 2에 나타낸 것과 같이 내측죠(12-1)의 방향을 반대로 가공하여 외측죠(11)의 길이로는 측정할 수 없는 배관의 호칭경을 측정할 수 있도록 버니어 캘리퍼스(1-1)를 구성하였다.Also, as shown in Fig. 2, the vernier caliper 1-1 is mounted so that the direction of the inner jaw 12-1 can be reversed to measure the nominal diameter of the pipe which cannot be measured by the length of the outer jaw 11. Configured.

그리고, 도 3에서 보여지듯이 종래에 깊이를 측정하는데 사용되던 깊이죠(13)의 단부를 "ㄱ" 모양으로 절곡부(13-1)를 형성하고 절곡된 부분만큼을 보상하는 기준선(21-1)이 표시된 버니어 캘리퍼스(1-2)를 만들어 상기 식을 이용하여 배관의 호칭경을 측정할 수 있게 하였다.And, as shown in FIG. 3, the end portion of the depth jaw 13, which is conventionally used to measure the depth, forms a bent portion 13-1 in the shape of “a” and a reference line 21-1 that compensates for the bent portion. Vernier calipers (1-2) marked with) were made to measure the nominal diameter of the pipe using the above equation.

다음 표 1은 버니어 캘리퍼스(1)의 죠(Jaw)의 길이와 측정치에 따른 호칭경을 나타낸 것이다.Table 1 shows the nominal diameters of the jaws of the vernier caliper 1 and the measured values.

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표 1.Table 1.

배관의 규격Piping standard 조(JAW)의 길이(mm)Length of jaw (mm) 호칭경ANominal diameter A 호칭경BNominal Diameter B 외경(㎜)Outer diameter (mm) 9090 6464 3030 2020 1515 1010 6A6A 1/8B1 / 8B 10.510.5 8A8A 1/4B1 / 4B 13.813.8 10A10A 3/8B3 / 8B 17.317.3 15A15A 1/2B1 / 2B 21.721.7 21.63321.633 20A20A 3/4B3 / 4B 27.227.2 26.22926.229 25A25A 1B1B 34.034.0 33.76333.763 30.98330.983 32A32A 1 1/4B1 1 / 4B 42.742.7 42.61442.614 40.76740.767 36.16636.166 40A40A 1 1/2B1 1 / 2B 48.648.6 47.83347.833 44.89944.899 39.29339.293 50A50 A 2B2B 60.560.5 60.49760.497 56.92056.920 52.24952.249 44.94444.944 65A65A 2 1/2B2 1 / 2B 76.376.3 74.53874.538 67.11167.111 60.64660.646 51.49751.497 80A80A 3B3B 89.189.1 84.21484.214 74.35074.350 66.67866.678 56.24956.249 90A90 A 3 1/2B3 1 / 2B 101.6101.6 92.69392.693 80.79680.796 72.08372.083 60.53060.530 100A100 A 4B4B 114.3114.3 100.578100.578 86.85686.856 77.18877.188 64.59164.591 125A125 A 5B5B 139.8139.8 139.301139.301 114.786114.786 97.89797.897 86.53386.533 72.05572.055 150A150 A 6B6B 165.2165.2 160.957160.957 127.373127.373 107.777107.777 94.93194.931 78.79078.790 175A175A 7B7B 190.7190.7 190.399190.399 180.097180.097 138.866138.866 116.858116.858 102.674102.674 85.01785.017 200A200 A 8B8B 216.3216.3 213.232213.232 197.455197.455 149.519149.519 125.315125.315 109.899109.899 90.84090.840 225A225A 9B9B 241.6241.6 233.615233.615 213.226213.226 159.348159.348 133.146133.146 116.601116.601 96.24996.249 250A250 A 10B10B 267.4267.4 252.713252.713 228.189228.189 168.783168.783 140.684140.684 123.060123.060 101.469101.469 300A300 A 12B12B 318.5318.5 286.810286.810 255.248255.248 186.064186.064 154.531154.531 134.944134.944 111.085111.085 350A350 A 14B14B 355.6355.6 309.218309.218 273.220273.220 197.666197.666 163.853163.853 142.954142.954 117.575117.575 400A400 A 16B16B 406.4406.4 337.496337.496 296.064296.064 212.527212.527 175.818175.818 153.244153.244 125.920125.920 450A450 A 18B18B 457.2457.2 363.582363.582 317.268317.268 226.415226.415 187.018187.018 162.886162.886 133.746133.746 500A500 A 20B20B 508.0508.0 387.917387.917 337.140337.140 239.499239.499 197.585197.585 171.988171.988 141.138141.138 550A550A 22B22B 558.8558.8 410.813410.813 355.905355.905 251.904251.904 207.615207.615 180.632180.632 148.162148.162 600A600 A 24B24B 609.6609.6 432.499432.499 373.729373.729 263.727263.727 217.181217.181 188.880188.880 154.867154.867 650A650 A 26B26B 660.4660.4 453.148453.148 390.74390.74 275.041275.041 226.344226.344 196.784196.784 161.294161.294 700A700 A 28B28B 711.2711.2 472.897472.897 407.042407.042 285.909285.909 235.151235.151 20.438120.4381 167.475167.475 750A750 A 30B30B 762.0762.0 491.853491.853 422.715422.715 296.378296.378 243.639243.639 211.707211.707 173.435173.435 800A800 A 32B32B 812.8812.8 510.105510.105 437.827437.827 306.489306.489 251.841251.841 218.787218.787 179.198179.198 850A850 A 34B34B 863.6863.6 527.727527.727 452.435452.435 316.278316.278 259.784259.784 225.645225.645 184.780184.780 900A900 A 36B36B 914.4914.4 544.778544.778 466.585466.585 325.772325.772 267.492267.492 232.301232.301 190.199190.199 1000A1000 A 40B40B 1016.01016.0 577.373577.373 493.671493.671 343.976343.976 282.276282.276 245.071245.071 200.599200.599 1100A1100A 44B44B 1117.61117.6 608.223608.223 519.347519.347 361.264361.264 296.324296.324 257.208257.208 210.485210.485 1200A1200 A 48B48B 1219.21219.2 637.582637.582 543.811543.811 377.761377.761 309.735309.735 268.797268.797 219.827219.827 1350A1350A 54B54B 1376.61376.6 680.57680.57 579.677579.677 401.985401.985 329.435329.435 285.825285.825 233.803233.803 1500A1500 A 60B60B 1524.01524.0 718.498718.498 611.359611.359 423.414423.414 346.871346.871 300.898300.898 246.089246.089 1600A1600 A 64B64B 1625.61625.6 743.515743.515 632.273632.273 437.575437.575 358.396358.396 310.863310.863 254.212254.212 1800A1800A 72B72B 1828.81828.8 791.181791.181 672.152672.152 464.603464.603 380.399380.399 329.890329.890 269.725269.725 2000A2000 A 80B80B 2032.02032.0 836.133836.133 709.794709.794 490.142490.142 401.198401.198 347.879347.879 284.394284.394

일반적인 버니어 캘리퍼스(1)인 300, 600mm를 이용할 때 외측죠(11)의 길이는 각각 64, 90mm 이다.When using the general vernier caliper (1) 300, 600mm, the length of the outer jaw (11) is 64, 90mm, respectively.

이와함께 죠의 길이를 30, 20, 15, 10mm로 가상하여 작성하였다.Along with this, the length of the jaws was simulated with 30, 20, 15, and 10 mm.

즉, 본 발명은 기존 버니어 캘리퍼스(1)에 길이측정을 위해 표시되어 있는 수치상부 또는 버니어 캘리퍼스의 후면에 위의 표 1을 기준하여 각 수치에 따른 호칭경값을 나타내는 삼점지지표(31)를 죠의 길이에 따라 표시해 놓았다.That is, the present invention is based on the three point support table (31) showing the nominal diameter value according to each value on the basis of the above Table 1 on the numerical upper portion or the back of the vernier caliper displayed for the length measurement on the existing vernier caliper (1) Marked according to length.

이하, 본 고안의 작용에 대하여 설명한다.Hereinafter, the operation of the present invention will be described.

상기와 같이 고안된 버니어 캘리퍼스를 이용하여 기존 길이측정때와 마찬가지 요령으로 버니어 캘리퍼스를 "0"점 조정한 후 측정하고자 하는 배관의 원호길이를 측정함으로써 원호길이 및 사용하는 버니어 캘리퍼스의 죠의 길이에 따라 표시되어진 삼점지지표의 값을 읽어 해당 호칭경을 바로 알아낼 수 있다.By using the vernier caliper devised as described above, adjust the vernier caliper to "0" point and measure the arc length of the pipe to be measured, and then follow the arc length and the jaw length of the vernier caliper to be used. By reading the value of the displayed three-point support, you can immediately find out the corresponding nominal diameter.

상기와 같은 본 고안에 의하여 버니어 캘리퍼스의 일반적인 측정작업과 함께 각종 배관의 호칭경을 간단하게 측정할 수 있어 배관에 대한 전문지식이 없어도 배관 또는 게이지 접속부의 호칭경 선정시 착오를 방지하고 시간을 절약할 수 있다.According to the present invention as described above, it is possible to easily measure the nominal diameters of various pipes together with the general measurement work of the vernier calipers, so that no error in the selection of the nominal diameters of the pipe or gauge connection part can be saved without time without the expert knowledge of the pipes have.

Claims (3)

버니어 캘리퍼스(1)를 구성함에 있어,In constructing the vernier caliper 1, 삼점지지측정원리를 이용하여 원호길이 및 외측죠(11)의 길이에 따라 구해진 삼점지지표(31)가 기존 측정수치 표시부의 상부 또는 후면에 표시되어 호칭경을 측정할 수 있도록 되어있는 것을 특징으로 하는 호칭경을 측정할 수 있는 버니어 캘리퍼스.Nominal diameter, characterized in that the three-point support table 31 obtained according to the arc length and the length of the outer jaw 11 using the three-point support measurement principle is displayed on the upper or rear side of the existing measurement value display unit to measure the nominal diameter. Vernier caliper for measuring 제 1항에 있어서,The method of claim 1, 삼점지지측정원리를 이용할 수 있도록 상기 버니어 캘리퍼스의 내측죠(12-1) 방향을 반대 상태로 가공한 것을 특징으로 하는 호칭경을 측정할 수 있는 버니어 캘리퍼스.Vernier caliper can measure the nominal diameter, characterized in that the inner jaw (12-1) direction of the vernier caliper was processed in the opposite state to use the three-point support measurement principle. 제 1항에 있어서,The method of claim 1, 상기 버니어 캘리퍼스 깊이죠(13)의 단부에 절곡부(13-1)를 형성하고, 그에 따른 기준선(21-1)이 형성되어 있는 것을 특징으로 하는 호칭경을 측정할 수 있는 버니어 캘리퍼스.Vernier caliper which can measure the nominal diameter, characterized in that the bent portion (13-1) is formed at the end of the vernier caliper depth jaw 13, and the reference line (21-1) is formed accordingly.
KR2019970034545U 1997-11-28 1997-11-28 Vernier Calipers for Measuring Nominal Diameter KR200265101Y1 (en)

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