CEN-TECH 47257 Operating Instructions Manual

Brand: CEN-TECH

Model: 47257

Type: Operating Instructions Manual

6” DIGITAL CALIPER

Model

47257

OPERATING INSTRUCTIONS

Visit our website at: http://www.harborfreight.com

Read this material before using this product.

Failure to do so can result in serious injury.

SAVE THIS MANUAL.

2009 by Harbor Freight Tools

or any artwork contained herein may be reproduced in any shape or form without the

express written consent of Harbor Freight Tools. Diagrams within this manual may not

be drawn proportionally. Due to continuing improvements, actual product may differ

slightly from the product described herein. Tools required for assembly and service may

not be included.

For technical questions or replacement parts, please call 1-800-444-3353.

Page 2SKU 47257 For technical questions, please call 1-800-444-3353.

SAVE THIS MANUAL

Keep this manual for the safety

warnings and precautions, assembly,

operating, inspection, maintenance and

cleaning procedures. Write the product’s

serial number in the back of the manual

near the assembly diagram (or month and

year of purchase if product has no num-

ber). Keep this manual and the receipt in a

safe and dry place for future reference.

IMPORTANT SAFETY

INFORMATION

In this manual, on the labeling,

and all other information

provided with this product:

This is the safety alert

symbol. It is used to alert

you to potential personal

injury hazards. Obey all

safety messages that

follow this symbol to avoid

possible injury or death.

DANGER indicates

a hazardous

situation which, if not

avoided, will result in death or

serious injury.

WARNING indicates

a hazardous

situation which, if not

avoided, could result in death

or serious injury.

CAUTION, used

with the safety alert

symbol, indicates a

hazardous situation which, if

not avoided, could result in

minor or moderate injury.

NOTICE is used to

address practices

not related to personal injury.

CAUTION, without

the safety alert

symbol, is used to address

practices not related to

personal injury.

GENERAL AND SPECIFIC

SAFETY RULES

WARNING! Read all

instructions.

Failure to follow all instructions

listed below may result in

serious injury.

SAVE THESE INSTRUCTIONS

Work area safety1.

Keep out of the reach of children.a.

Wear ANSI-approved safety b.

goggles during use.

Read this manual before use.c.

Keep work area clean and well d.

lit. Cluttered or dark areas invite

accidents.

When not in use, store in a dry e.

location.

This Digital Caliper was designed f.

for specic tasks. Do not modify

this tool and do not use it for pur-

poses for which it was not intended.

Do not operate while you are g.

tired, or under the inuence of

alcohol or drugs. A moment of

inattention may result in damage to

your project and/or personal injury.

Maintain labels and nameplates h.

on the tool. These carry important

safety information. If unreadable

or missing, contact Harbor Freight

Tools for a replacement.

Page 3SKU 47257 For technical questions, please call 1-800-444-3353.

The warnings, precautions, and i.

instructions discussed in this

instruction manual cannot cover all

possible conditions and situations

that may occur. It must be under-

stood by the operator that common

sense and caution are factors which

cannot be built into this product, but

must be supplied by the operator.

SAVE THESE

INSTRUCTIONS.

SPECIFICATIONS

Display Scales Inches & Millimeters

Display Digits LCD (Liquid Crystal Display)

Range 0” - 6”, Or 0mm - 200mm

Accuracy

Inches: ±0.001"

Metric: ±0.03mm

Display

Inches: 0.0005"

Metric: 0.01mm

Measuring

Positions

4-Way Measuring:

Outside, Inside, Depth, Step

Power Supply

One 1.5V DC SR44 Button

Cell Battery (Included)

Shut-Off

Off Button,

4-1/2 Minute (Automatic)

UNPACKING

When unpacking, check to make

sure that the item is intact and undam-

aged. If any parts are missing or broken,

please call Harbor Freight Tools at the

number shown on the cover of this manual

as soon as possible.

List of Contents

Part(s) Description Qty

1 6” Digital Calliper 1

1 Foam Lined Molded Case 1

1 Cell Battery (One inserted into

caliper and one in case)

OPERATING INSTRUCTIONS

Read the ENTIRE

IMPORTANT SAFETY

INFORMATION section at

the beginning of this manual

including all text under

subheadings therein before set

up or use of this product.

Note: Do not bump or shock the Digital

Caliper. Rough treatment may dam-

age the highly sensitive mechanism.

Components and Controls

Figure 1

LCD

Screen

Depth

Measuring

Blade

Locking

Screw

Sliding

Ruler

Inside

Measurement

Jaws

Outside

Measurement

Jaws

Thumb

Wheel

Page 4SKU 47257 For technical questions, please call 1-800-444-3353.

Controls

Off Button

Figure 2

LCD

Screen

Locking

Screw

On Button /

Metric to Inches

Button

.0005

Increment

for Inches

Inches

Indicator

Metric

Indicator

Measurement

Readout

Zero Button

Thumb Wheel

Negative

Reading

Indicator

Measuring Points

Figure 3

LCD

Readout

Depth

Measuring

Blade

Sliding Ruler

Read

Measurement

on the LCD or

Sliding Ruler

Step Measurement -

From bottom of Sliding

Ruler to edge of the

Inside Measurement Jaw

Inside

Measurement

Jaws

Outside

Measurement

Jaws

This tool has four measuring points:

Outside Measurement Jaws, which •

are placed on the outside of an

object to measure the outer dimen-

sions.

Inside Measurement Jaws, which •

are placed inside a hollow object to

measure the inside dimensions.

Depth Measuring Blade, which is •

lowered inside a hollow object to

measure it’s depth from the tip of

the Blade to the end of the Sliding

Ruler.

Step Measurement, which is mea-•

sured from the bottom of the Sliding

Ruler to the ledge created on the

backside of the tool by the second

Inside Measurement Jaw.

Basic Operation

Press the On Button to turn the LCD 1.

on.

Turn the Locking Screw counterclock-2.

wise to loosen the Sliding Ruler.

Slide the Jaws open and wipe them 3.

off so they are free of any debris.

Push the Jaws together, then press 4.

the Zero Button to set the measuring

mechanism to zero.

If needed, press the Metric/Inches 5.

Button to change the readout between

measuring inches or millimeters.

Note: The same button is used to turn on

the unit and to change the readout

between metric and inches.

Slide the Sliding Ruler toward the 6.

jaws, separating the jaws or lengthen-

ingtheDepthBladeenoughtotthe

object you wish to measure.

Adjust the Jaws or Depth Blade with 7.

the Thumb Wheel, as needed, until

there is gentle contact with the object.

Page 5SKU 47257 For technical questions, please call 1-800-444-3353.

Read the measurement in the LCD 8.

Screen or on the Sliding Ruler.

Note: Make sure the tool is perpendicular

to the object so you will get an ac-

curate reading.

Note: The LCD readout displays met-

ric measurements to the nearest

0.01mm, and to the nearest 0.0005”

formeasurementsininches.Thenal

digit for the inches measurement is

in the lower right corner of the LCD

Screen and displays only when the

measurement is 0.0005 greater than

the 0.001 increment.

Whennishedmeasuring,closethe9.

jaws, press the “OFF” Button to turn

the Digital Caliper off, wipe off the unit

with a soft cloth and replace in case.

Store in a safe, dry place out of reach

of children.

Single Measurements

Note: To ensure an accurate reading:

Make sure the Jaw faces are clean.a.

Set the Measurement Readout to b.

zero.

Make sure you position the Caliper c.

perpendicular to the object when

measuring.

To make an Outside Measurement:

Figure 4

Slide the jaws open and place the

item to measure between the Outside

Measurement Jaws. Slide the jaws

together until they gently contact the

item. Read the measurement on the

ruler or the LCD Screen.

To make an Inside Measurement:

Figure 5

Slide the jaws closed and place the

Inside Measurement Jaws inside the

item to measure. Slide the jaws open

until they gently contact the item.

Read the measurement on the ruler

or the LCD Screen.

Page 6SKU 47257 For technical questions, please call 1-800-444-3353.

To make a Depth Measurement:

Figure 6

Sliding Ruler

Depth Measuring Blade

Rest the end of the Sliding Ruler on

the edge of the hole to measure. Slide

the jaws open until the Depth Measur-

ing Blade gently contacts the bottom

of the hole. Read the measurement

on the ruler or LCD Screen.

To make a Step Measurement:

Figure 7

Stationary Jaw

Moving Jaw

Upper stepLower step

Slide the jaws apart and rest the head

of the moving jaw on the lower step.

Continue sliding the jaws apart until

you can rest the head of the station-

ary jaw on the top of the upper step to

measure. Read the measurement on

the ruler or LCD Screen.

Compound Measurements

To take a compound measurement,

you measure one part of the object,

then zero out the Caliper, then take

a different measurement. This allows

you to make complex measurements.

To nd the Center Distance:

This two step procedure measures

the distance between the center of

two identical holes.

Figure 8

Step 1

Step 2

1. Using the Inside Measurement Jaws,

measure the inside diameter of one of

the holes. Press the Zero Button while

the Caliper is opened to the hole

measurement.

Remove the jaws from the hole and 2.

slide the Caliper so that the Inside

Measurement Jaws have gentle

contact with the far sides of the two

holes. The measurement displayed

is the distance between the center of

the two holes.

Page 7SKU 47257 For technical questions, please call 1-800-444-3353.

To Compare a Shaft to a Hole:

This two step procedure is useful

in tooling, when you need to see if

a dowel, pin or other cylinder is the

same size as a hole.

Figure 9

Step 1

Step 2

1. Using the Inside Measurement Jaws,

measure the inside diameter of hole.

Press the Zero Button while the Cali-

per is opened to the hole measure-

ment. Remove the jaws from the hole.

Using the Outside Measurement 2.

Jaws, measure the dowel, pin or cylin-

der. The three possible conditions are:

If the measurement is zero, then c.

the object is the same size as the

hole.

If the measurement is negative (the d.

minus sign is displayed) then the

object is smaller than the hole by

the amount shown.

If the measurement is positive, then e.

the object is larger than the hole by

the amount shown.

To Determine Thickness:

Use this two step procedure to de-

termine the material remaining when

drilling a hole.

Step 1

Step 2

Figure 10

Measures this

distance

1. Using the Outside Measurement

Jaws, measure the total length of the

object. Press the Zero Button while

the Caliper is opened to the mea-

surement. Remove the tool from the

object.

Using the Depth Measurement Blade, 2.

measure the inside of the hole. The

reading will show a negative number,

which is the remaining thickness of

the material.

Page 8SKU 47257 For technical questions, please call 1-800-444-3353.

Replacing The Battery

Figure 3

Battery Cover

1. Remove the Battery Cover by sliding

the cover in the direction shown in

Figure 3 above, then tilt the cover up

and off of the unit.

Remove the existing Battery and 2.

replace with an identical Battery as

listedinthe“Specications”charton

page 3 of this manual.

Replace the Battery Cover.3.

NOTE: Dispose of the used Battery in ac-

cordance with all local ordinances.

Cleaning And Maintenance

BEFORE EACH USE, inspect the 1.

general condition of the tool. Check

for any condition that may affect its

safe operation.

After use, wipe with soft, clean cloth 2.

and store inside, away from extreme

hot, or cold and where children do not

have access.

The LCD display and Jaw faces 3.

should be wiped periodically with a

clean, dry, lint-free cloth.

Lubricate the body of the Caliper with 4.

a few drops of clock oil.

Keep Battery Compartment clean, dry 5.

and free of corrosion.

Keep this Caliper dry at all times to 6.

prevent destroying the electronics.

Page 9SKU 47257 For technical questions, please call 1-800-444-3353.

PLEASE READ THE FOLLOWING CAREFULLY

NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR

WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY

REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS

OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY

STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY

CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER AS-

SUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGI-

NAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER

INSTALLATION OF REPLACEMENT PARTS THERETO.

LIMITED 90 DAY WARRANTY

Harbor Freight Tools Co. makes every effort to assure that its products meet

high quality and durability standards, and warrants to the original purchaser that this

product is free from defects in materials and workmanship for the period of 90 days

from the date of purchase. This warranty does not apply to damage due directly or

indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside

our facilities, criminal activity, improper installation, normal wear and tear, or to lack of

maintenance. We shall in no event be liable for death, injuries to persons or property,

or for incidental, contingent, special or consequential damages arising from the use of

our product. Some states do not allow the exclusion or limitation of incidental or con-

sequential damages, so the above limitation of exclusion may not apply to you. THIS

WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR

IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.

To take advantage of this warranty, the product or part must be returned to us

with transportation charges prepaid. Proof of purchase date and an explanation of the

complaintmustaccompanythemerchandise.Ifourinspectionveriesthedefect,we

will either repair or replace the product at our election or we may elect to refund the

purchase price if we cannot readily and quickly provide you with a replacement. We will

return repaired products at our expense, but if we determine there is no defect, or that

the defect resulted from causes not within the scope of our warranty, then you must

bear the cost of returning the product.

Thiswarrantygivesyouspeciclegalrightsandyoumayalsohaveotherrights

which vary from state to state.

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353

Record Product’s Serial Number Here:

Note: If product has no serial number, record month and year of purchase instead.

Note: Some parts are listed and shown for illustration purposes only, and are not

available individually as replacement parts.

CEN-TECH 47257 Operating Instructions Manual

CEN-TECH 47257 Operating Instructions Manual

CEN-TECH 47257 Operating Instructions Manual

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