Measurement accuracy is needed in designing a device. Kekurangtelitian often make such a device is not functioning optimally or even function at all. Examples of the screws that will be used have a diameter of not the same as his partner, although the difference of 0.01 mm, the two can not be assembled properly. If the screw component is installed on the car, of course, the car will not function normally, can even cause accidents.
Vernier caliper and micrometer screw is a tool that can be used to measure the length of an object with very good accuracy. Calliper has a limit of accuracy of 0.1 mm, which means that the accuracy of measurement instruments can be up to the nearest 0.1 mm. Sliding the bar can also be used to measure distances. There are three things that can be measured by a sliding ruler, namely: thickness (within the outer body), diameter (the distance the inside of the body) and depth (a hole).
Parts:
[1]. Jaw measuring the outside of this section is used to measure part of an object by means enclosed.
[2]. Measuring jaw part in this section is used to measure the inside of an object by means of elongated (eg hole in the pipe)
[3]. This section depth gauge is used to measure a hole / gap of an object by plugging measuring section. This section is located in the holder.
[4]. The main scale metric [mm] This section serves to read the results of measurements in mm.
[5]. Imperial size scale [inch] This section serves to read the measurement results in units of inches.
[6]. Scale Nonius / vernier metrics. Serve as a benchmark reading of the scale with a precision of 0.1 mm or 0,02mm or 0,05mm
[7]. Nonius scale imperial (inch) Serves as a benchmark reading of the scale with a precision of 1 / 128inch. For measurements with imperial units dianalogkan do with the determination of the accuracy metrics.
[8]. To lock and freeing time shift You keep going to read the results of measurement or measuring.
As a measuring instrument relatively closely enough, to keep the measurement accuracy is critical examination ruler shift sliding scale on a periodic basis, or each will be used. Various precision sliding bar (in metric)
Image crossbar sliding scale with precision 0,02mm
In the picture above reads Top 49 Scale Scale = 50 So Nonius Nonius scale of magnitude 1 x 49 = 1/50 = 0.98 Skala Skala Main Main, where 0.98 is a little less than one drawback is the value of the accuracy of the sliding bar. So the accuracy of the sliding ruler is = 1-.98 = 0.02 mm Or: Accuracy shove it is: one part is divided by the main scale Nonius scale = 1/50 = 0.02 mm.
Image crossbar sliding scale with precision 0,05mm
In the picture above reads Top 39 Scale Scale = 20 So Nonius Nonius scale of magnitude 1 x 39 = 1/20 = 1.95 Skala Skala Main Main, where 1.95 is a little less than 2 drawback is the value of the accuracy of the sliding bar. So the accuracy of the sliding ruler is = 2 to 1.95 = 0.05 mm Or: Accuracy shove it is: one part is divided by the main scale Nonius scale = 1/20 = 0.05 mm.
Image scale with a precision of 0.1 mm sliding bar
In the picture above reads 9 Top Scale Scale = 10 So Nonius Nonius scale of magnitude 1 = 1/10 x 9 Top Scale = 0.9 Major Scale, where 0.9 is slightly less than 1 drawback is the value of the accuracy of the sliding bar. So the accuracy of the sliding ruler is = 1 to 0.9 = 0.1 mm Or: Accuracy shove it is: one part is divided by the main scale Nonius scale = 1/10 = 0.1 mm.