Harbor Freight Tools 93051 Product manual

dial indicator

with flex stand and clamp

model

93051

assembly and 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.

Copyright© 2005 by Harbor Freight Tools®. All rights reserved. No portion of this manual 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.

manual revised 10h

THANK YOU for choosing a harbor freight tools product. For future reference, please

complete the owner’s record below:

model______________ serial no._____________ purchase date_______________

SAVE THE RECEIPT, WARRANTY AND THESE INSTRUCTIONS. It is important that you read the
entire manual to become familiar with the unit BEFORE you begin assembly.

technical specifications

This Dial Indicator uses a flexible stem and locking plier clamp that makes it versatile. It can be
mounted on a wood top, aluminum, plastic and other materials and locations.

Overall Plier Dimensions: 7-3/16” x 1-3/4” H x 1/2” Width
Capacity 0” - 1”
Revolution: 1” per revolution
Scale Readout: 1/100” (outside dial), 10/90” (inside dial)
Accuracy +/-0.001
Included: Lockable Bezel; Dial indicator with built in mounting
bracket for Flex Tube

safety warnings and precautions

warning: when using product, basic safety precautions should always be followed to
reduce the risk of personal injury and damage to equipment.

read all instructions before using this product!

1. Keep work area clean. Cluttered areas invite injuries.

2. observe work area conditions. Keep work area well lighted.

3. store idle equipment. When not in use, the Dial Indicator must be stored in a dry location.
Always lock up products and keep out of reach of children.

4. use the right product for the job. There are certain applications for which the Dial Indicator
was designed. Do not modify the Dial Indicator and do not use the Dial Indicator for a purpose
for which it was not intended.

check for damaged parts. Before using any product, any part that appears damaged should

5.
be carefully checked to determine that it will operate properly and perform its intended function.
Check for any broken or damaged parts and any other conditions that may affect its operation.
Replace or repair damaged or worn parts immediately.

6. replacement parts and accessories. When servicing, use only identical replacement parts.
Use of any other parts will void the warranty.

7. do not operate product if under the influence of alcohol or drugs. Read warning labels on
prescriptions to determine if your judgment or reflexes are impaired while taking drugs. If there
is any doubt, do not operate the product.

8. use eye protection. Always wear ANSI approved impact safety goggles.

SKU 93051 For technical questions please call 1-800-444-3353. Page 2

9. do not allow children to play with the dial indicator.

warning: The warnings, cautions, and instructions discussed in this instruction manual cannot
cover all possible conditions and situations that may occur. It must be understood by
the operator that common sense and caution are factors which cannot be built into
this product, but must be supplied by the operator.

unpacking

When unpacking your Dial Indicator check to make sure that the product is intact and undamaged.
If any parts are missing or broken, please call harbor freight tools at 1-800-444-3353.

assembly

Your Dial Indicator will require some minor assembly. It is important that you read the entire manual
to become familiar with the product BEFORE you use the Dial Indicator. Before using the Dial
Indicator, check to make sure that the product is intact and undamaged.

do not bump or shock the tool when applying it to any work piece. rough treatment may
damage the highly sensitive mechanism.

1. Because of the unique Flexible Stand, your Dial Indicator can be mounted to many different

locations for different applications. When mounting the Dial Indicator, take into account the
location of the test material, the length of the Dial Indicator, and the design of the test fixture.

2. Secure the Pliers to any location.

3. Loosen the Caliper Clamp and insert the Dial Caliper into the opening-see Parts diagram.

Tighten the Knob into place to secure the Dial Caliper in place.

4. Turn the Cam Lock to lock the cable in place. If the Cam Lock doesn’t tighten down properly,

adjust the fine tuning mechanism located near the Dial.

5. Establish a base line. Turn the Bezel on the Dial so that the needle points to zero.

Note: There are many applications for the Dial Indicator with Flex Stand and Clamp. Following is
one example of how the Dial Indicator can be used: testing brake rotors for warp.

Make certain to clean off all brake components with brake parts cleaner before testing.
Following steps 1 through 5, set the Pin of the Dial lightly against a rotor to establish a base

line. You do not want the needle too tight against the object being measured. There must be
room for the needle to move in and out while under pressure.

Spin the rotor to see if it is true. As the rotor spins, the needle will move in and out. The dial
will indicate the degrees of difference in true, defined as the measurements which are above
and below the base line you established at the beginning.

note: Dial Indicators are highly versatile tools used in many applications in machine shops and
precision fabricating and testing facilities. The above example is only one of many possible uses for
this measuring tool.

SKU 93051 For technical questions please call 1-800-444-3353. Page 3

maintenance

1. Protect the Dial Indicator from rough use. It is susceptible to damage from being dropped,

struck with a test piece, improperly mounted or other abuse. The precision movement is
similar to a watch works, and should be treated accordingly.

2. Protect the Dial Indicator from exposure to water or corrosive materials. It should be kept

clean and dry. Occasional cleaning with a clean rag will extend its life and good appearance.

3. When not in use, store the Dial Indicator in its case. Do not leave it installed on your test

piece, as this invites damage or exposure to corrosive environments. Lock it up and store in
a dry location to inhibit rust. Keep out of the reach of children.

PLEASE READ THE FOLLOWING CAREFULLY

THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL
ONLY. NEITHER THE MANUFACTURER NOR 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 ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT
OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.

parts list

Part No. Description QTY

1 Dial Caliper 1
2 Locking Cable 1
3 Pliers 1
4 Caliper Clamp 1
5 Cam Lock 1

Note: Some parts are listed and shown for illustration purposes only and are not available
individually as replacement parts.

parts diagram

1

4

2

5

3

SKU 93051 For technical questions please call 1-800-444-3353. Page 4