• Internal dimensions (in inches) using the uppermost jaws.

• External dimensions (in metric) using the lower jaws.

It is made up of stainless steel.

Vernier calipers is commonly used in industry provide a precision to a hundreth of milimeter (10 micrometers), or one thousandth of an inch more precise instrument used for the same purpose is the micrometer.

1. Outside jaws: used to measure external diameter or width of an object.

2. Inside jaws: used to measure internal diameter of an object.

3. Depth probe: used to measure depths of an object or a hole.

4. Main scale: gives measurements of up to one decimal place(in cm).

5. Main scale: gives measurements in fraction(in inch).

6. Vernier gives measurements up to two decimal places(in cm).

7. Vernier gives measurements in fraction(in inch).

8. Retainer: used to block movable part to allow the easy transferring a measurement.

>>THE INSTRUCTION ON USE<<

• The Vernier caliper is an extremely precise measuring instrument; the reading error is 1/20 mm = 0.05 mm.
• Close the jaws lightly on the object to be measured.
• If you are measuring something with a round cross section, make sure that the axis of the object is perpendicular to the caliper. This is necessary to ensure that you are measuring the full diameter and not merely a chord.
• Ignore the top scale, which is calibrated in inches.
• Use the bottom scale, which is in metric units.
• Notice that there is a fixed scale and a sliding scale.
• The boldface numbers on the fixed scale are centimeters.
• The tick marks on the fixed scale between the boldface numbers are millimeters.
• There are ten tick marks on the sliding scale. The left-most tick mark on the sliding scale will let you read from the fixed scale the number of whole millimeters that the jaws are opened.
  
  
  
• In the example above, the leftmost tick mark on the sliding scale is between 21 mm and 22 mm, so the number of whole millimeters is 21.
• Next we find the tenths of millimeters. Notice that the ten tick marks on the sliding scale are the same width as nine ticks marks on the fixed scale. This means that at most one of the tick marks on the sliding scale will align with a tick mark on the fixed scale; the others will miss.
• The number of the aligned tick mark on the sliding scale tells you the number of tenths of millimeters. In the example above, the 3rd tick mark on the sliding scale is in coincidence with the one above it, so the caliper reading is (21.30 ± 0.05) mm.
• If two adjacent tick marks on the sliding scale look equally aligned with their counterparts on the fixed scale, then the reading is half way between the two marks. In the example above, if the 3rd and 4th tick marks on the sliding scale looked to be equally aligned, then the reading would be (21.35 ± 0.05) mm.
• On those rare occasions when the reading just happens to be a "nice" number like 2 cm, don't forget to include the zero decimal places showing the precision of the measurement and the reading error. So not 2 cm, but rather (2.000 ± 0.005) cm or (20.00 ± 0.05) mm.

*Since the instruction for this instrument is quite long to elaborate, you might have a problem in understanding it so i suggest that you click to the links that i have mentioned below. Plus, it's more easier for you to understand because there's a demonstrations been played there..okay?*

(Don't be so lazy to click on it guys!!it won't take you an hour to do it!HAH!)

You can click to the link below:

Click and

Click

Ok..i think that's all for now..if you have any questions regarding on this descriptions..please don't be hesitate to confront me or Faiz. Okay?

I'm sleepy..time for bed♥
Goodnight & Sweetdreams Eyespotters♥

Compiled by:
♥Venney S.S ♥
&
♥M.Faiz M.A ♥

Labels: Descriptions♥

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