The document discusses the vernier caliper, invented in 1631 by Pierre Vernier, detailing its types: analog, dial, and digital. It explains its construction, how to measure dimensions using the least count, and potential handling errors. Additionally, it provides manufacturer information and prices for different types of vernier calipers.

1. VERNIER
CALIPER
-HARSH K. PATEL
NAVRACHANA UNIVERSITY

2. HISTORY
Vernier calliper was invented in 1631 by French
mathematician Pierre Vernier.

3. TYPE OF VERNIER
CALLIPER
1.analog Vernier calliper
2.dial Vernier calliper
3.digital Vernier calliper

4. ANALOG
VERNIER
CALLIPER

5. DIAL
VERNIER
CALLIPER

6. DIGITAL
VERNIER
CALLIPER

7. CONSTRUCTION
In Vernier Scale there are n number of division as per
manufacturer.
Vernier calliper is made up of the S.S.
In digital Vernier calliper display window is made up of hard
plastic.

8. LEAST COUNT
L.C.=
𝑣𝑎𝑙𝑢𝑒 𝑜𝑓 1 𝑑𝑖𝑣𝑖𝑠𝑖𝑜𝑛 𝑜𝑛 𝑚𝑎𝑖𝑛 𝑠𝑐𝑎𝑙𝑒
𝑡𝑜𝑡𝑎𝑙 𝑑𝑖𝑣𝑖𝑠𝑖𝑜𝑛 𝑜𝑛 𝑣𝑒𝑟𝑛𝑖𝑒𝑟 𝑐𝑎𝑙𝑖𝑝𝑒𝑟
L.C.=
1𝑚𝑚
20
=0.05mm

9. USE
Measure
internal
diameter
01
Measure
external
diameter
02
Measure
thickness
03
Measure
depth
04
Measure
length
05

10. HOW TO MEASURE
Dimension=main scale reading+(Vernier scale
reading x least count)
Example:-
◦ Dimension=5mm+(1 x 0.1)mm
=5.1mm

11. HANDLING

12. ERROR
Zero error: Vernier scale 0 and main scale met each other
Positive error: Vernier scale 0 is after main scale
◦ Correct reading=actual reading -error
Negative error: Vernier scale 0 is before main scale
◦ Correct reading=actual reading +error

13. STORAGE
Avoid direct sun light,
low temperature,
high temperature and
high humidity.
Don’t leave the jaws
of a caliper
completely closed
during storage.

14. MANUFACTURER
Manufacturer Length Type Price(rupess)
Aerospace 150mm Analog 550
Mitutoyo 150mm Analog 3800
Aerospace 150mm Digital 2000
Mitutoyo 150mm Digital 8900
Aerospace 150mm Dial 1500
Mitutoyo 150mm Dial 4800

15. THANK YOU