aims
O-30 (2003) full size
12/8/03
10:13 PM
Page 1
CALIPERS
How to Read Vernier Calipers
Fractional Reading Vernier Scale.
1/16" on the main beam is subdivided into eight or to 1/128".
Because of .300" inside jaw thickness, the vernier is placed .300" off from zero point.
Position of the vernier plate can be readjusted.
1/16"
Graduations on the main beam.
Decimal Reading Vernier
Scale. 1/40th of an inch is subdivided into 25 by the vernier to read to onethousandth. One inch is first divided into ten, and then 40 graduations.
Each smallest graduation on the main beam represents .025".
Inch Fractional and Decimal Readings
This vernier caliper has two scales which enable readings to a fraction of an inch as in the case of 1/128" graduated vernier (upper scale), or in decimals as in the case of 1/1000" graduated vernier (lower scale).
Each division on the fractional main scale represents
1/16th of an inch. The vernier further subdivides each division on the main scale to read 1/128 of an inch.
Each division of the decimal main scale represents one fortieth of an inch or .025". Each fourth line marked by 1 represents .100", the line marked 2 represents .200", and so forth. The vernier consists of 25 equal divisions which further subdivides each division on the main scale to .001".
1. 1/128" graduated vernier (upper scale)
Readings on the main scale................................16/16"
Vernier scale reading ...........................................3/128"
Final reading...........................16/16 + 3/128 = 151/128"
2. 1/1000" graduated vernier (lower scale)
Main scale reading ............................................1.375"
Vernier scale reading......................................... .023"
Final reading ....................................................1.398"
O-30
.300"
Rounded inside jaws. Thickness
.300" when closed.
Inch Decimal Reading Only (for Inside and
Outside Jaws)
The vernier
12/8/03
10:13 PM
Page 1
CALIPERS
How to Read Vernier Calipers
Fractional Reading Vernier Scale.
1/16" on the main beam is subdivided into eight or to 1/128".
Because of .300" inside jaw thickness, the vernier is placed .300" off from zero point.
Position of the vernier plate can be readjusted.
1/16"
Graduations on the main beam.
Decimal Reading Vernier
Scale. 1/40th of an inch is subdivided into 25 by the vernier to read to onethousandth. One inch is first divided into ten, and then 40 graduations.
Each smallest graduation on the main beam represents .025".
Inch Fractional and Decimal Readings
This vernier caliper has two scales which enable readings to a fraction of an inch as in the case of 1/128" graduated vernier (upper scale), or in decimals as in the case of 1/1000" graduated vernier (lower scale).
Each division on the fractional main scale represents
1/16th of an inch. The vernier further subdivides each division on the main scale to read 1/128 of an inch.
Each division of the decimal main scale represents one fortieth of an inch or .025". Each fourth line marked by 1 represents .100", the line marked 2 represents .200", and so forth. The vernier consists of 25 equal divisions which further subdivides each division on the main scale to .001".
1. 1/128" graduated vernier (upper scale)
Readings on the main scale................................16/16"
Vernier scale reading ...........................................3/128"
Final reading...........................16/16 + 3/128 = 151/128"
2. 1/1000" graduated vernier (lower scale)
Main scale reading ............................................1.375"
Vernier scale reading......................................... .023"
Final reading ....................................................1.398"
O-30
.300"
Rounded inside jaws. Thickness
.300" when closed.
Inch Decimal Reading Only (for Inside and
Outside Jaws)
The vernier