20 10 0
5
D10 15mm
60°45°
20 10 0
10 20 30mm
45°
60°
5
D10 15mm
60°45°
20 10 0
10 20 30mm
45°
60°
5
D10 15
mm
60°45°
20 10 0
10 20 30mm
45°
60°
5
D10 15mm
STAINLESS STEEL
MADE IN JAPAN
60°45°
20 10 0
10 20 30mm
45°
60°
5
D10 15mm
60°45°
20 10 0
10 20 30mm
45°
60°
5
10 15
mm
60°45°
20 10 0
10 20 30mm
45°
60°
5
D10 15
mm
60°45°
20 10 0
10 20 30mm
45°
60°
5
D10 15mm
60°45°
20 10 0
10 20 30mm
45°
60°
5
D10 15mm
60°45°
20 10 0
10 20 30mm
45°
60°
5
D10 15mm
60°45°
20 10 0
10 20 30mm
45°
60°
5
D10 15mm
60°45°
20 10 0
10 20 30mm
45°
60°
mm
Main body with measurement sur-
faces and support for Rod and Stopper.
Meas. tip contacts the weld surface.
Scale for use when measuring throat
thickness for bevel-groove welds.
Scale for use when measuring
throat thickness for fillet welds.
S et Stopper to bevel depth by
sliding, and position gauge on surface.
Scale for setting Stopper to bevel
depth of web.
When Stopper is set, secure
position using Lock Nut.
①Gauge Body · · · · · · · · ·
②Rod · · · · · · · · · · · · · · · · ·
③
Throat Thick. Meas. Scale
·
④
Throat Thick. Meas. Scale ·
⑤Stopper · · · · · · · · · · · · · ·
⑥Groove Depth Scale · ·
⑦Lock Nut · · · · · · · · · · · · ·
WELDING GAUGE
WGF
-
60・WGF-50
<comb.>
Model
No.
INSTRUCTION MANUAL
PROFESSIONAL
Thank you for purchasing the Niigata Seiki WELDING GAUGE. This measuring tool measures throat thickness for fillet welds (non-
beveled) and for bevel-groove welds with versions for a 60° or 50° bevel angle.
● For safe and proper use of this product, please read this instruction manual before use and follow the procedures described. Please keep manual
where it is accessible to user for future reference.
● Keep this manual with the instrument if transferred to a third party.
● For inquiries about this product, please contact distributor or place of purchase.
■
PART IDENTIFICATION & FUNCTION
USAGE NOTES
CLEANING ・ STORAGE
⑦Lock Nut
⑥
Grv. Depth Scale
⑤
Stopper
②Rod
③
Throat Meas. Scale
（for bevel groove welds）
④
Throat Meas. Scale
（for fillet welds）
(for fillet welds)
(for bevel groove welds)
※WGF-60
shown
Remove any oil or debris from surface using a dry cloth.
Foreign matter between Main Body and Rod or Stopper will
prevent smooth operation.
For severe dirt, use alcohol or benzine to clean.
DO NOT use harsh solvent such as gasoline or thinner as they
may remove the printed scale markings.
Before use, inspect to make sure there is no damage or
scratches to Main Body measuring surfaces, the Stopper, or the
tip of the Rod.
Scratches or burrs on surface will affect accuracy. If there is a burr,
it can be removed with an oil stone or through factory service.
After use, store in the provided storage case in a cool dry place.
Keep away from moisture and direct sunlight and protect from
access by unauthorized personnel.
FREQUENTLY ASKED QUESTIONS
●Can the Rod sliding stiffness be adjusted?
The Rod motion resistance is not user adjustable. Please
contact us for factory service if it becomes loose and
requires adjustment.
Moving the Rod with dirt or dust on surfaces may loosen
the movement over time. Always clean the gauge with a
dry cloth before use.
⇒
●
●
To maintain instrument accuracy, periodic
calibration is recommended. Calibration interval
necessary to maintain accuracy will vary depending
on frequency and conditions of use. Please follow
your company's guidelines and calibrate regularly.
H (mm)
W (mm)
Read the manual and follow the directions.
・U
se of product other than as described in this manual may cause accident.
Use only in environment meeting these conditions:
●Dry location protected from rain and water.
●Protected from direct sunlight.
●Protected from access by children and unauthorized personnel.
・U
se in places contrary to the above may cause damage to the product
or affect accuracy resulting in accident or injury.
Handle with Care.
・
Do not drop or subject instrument to excessive shock. Do not place under
heavy objects. Improper handling may cause damage and poor accuracy.
Do not disassemble or modify.
・
Disassembly may damage product or cause inaccuracy. For repair, please
contact distributor or place of purchase.
Do not overextend the Rod.
・
The measurement range of the Rod is 0~30 mm. If forced beyond this, the
Rod will come off the Body. The Rod can be replaced without aff ecting
accuracy. However, repeated misuse may cause damage and inaccuracy.
This instrument can perform measurements using two different methods. Please use the proper
procedure below and the correct measurement surfaces and scale for the method used.
Remove any grime from the Main Body, Rod,
and Stopper sliding surfaces using a dry cloth
before use. Dirt under sliding surfaces will
prevent smooth operation.
Read the scales from directly in front of the
gauge. Reading the scale at an angle will result
in inaccurate readings due to parallax error.
Body Material： Stainless（ SUS410）
Throat Thickness Measuring Range：
Bevel Groove … 5～30mm
Fillet …0〜20mm
Groove Depth Range：5〜14.5mm
Gradiations：1mm
Accuracy of length：±0.4mm
Outside Japan,
Please contact distributor or place of purchase
to inquire about calibration services.
WGF-60
WGF-50
60° Bevel・45°
(
Fillet
)
50° Bevel・45°
(
Fillet
)
H67×W71
H75×W66
Model No. Applicable Groove Angle
Dimensions (mm)
SAFETY PRECAUTIONS
INSPECTION and MAINTENANCE
HOW TO USE
PLEASE OBSERVE
To prevent harm to yourself or others, and to prevent damage to property,
always follow the procedures marked by the following symbols.
Indicates risk of personal injury or property damage if
not followed.
CAUTION:
Denotes a prohibition
‒
You MUST NOT do.
Denotes a requirement
‒
You MUST do.
H
OW TO MEASURE BEVEL WELD THROAT THICKNESS
（60°or 50°）Range：5〜30mm
①
Set the Stopper
Loosen the Lock Nut and slide the Stopper to set
the Stopper Baseline to the bevel-groove depth.
Slide the Rod to set the Baseline to the 30mm
marking on the scale used for bevel-groove
welds.
Place the reference surface against Flange,
and the Stopper against Web as shown in the
diagram.
② Set the Rod Baseline to 30mm. ③Position the Gauge over the weld.
Holding the Main Body of the Gauge in the
position from step ③, slide the Rod tip to
contact the weld.
④Slide the Rod
Off the Scale, read the position of the Rod Base-
line (15mm in the example in the diagram.)
⑤Read the Scale
HOW TO MEASURE FILLET THROAT THICKNESS (No Bevel) Range：0〜20mm
Place the reference surfaces agains
t
the base of the part to be measured
as shown in the diagram.
Holding the Main Body of the
Gauge in the position from step ②,
slide the Rod tip to contact the Fillet.
①Position the Gauge over the
weld.
③Slide the Rod
Off the Scale, read the position of
the Rod Baseline (10mm in the
example in the diagram.)
④Read the Scale② Set the Rod Baseline to
30mm.
Web
Baseline
Flange
Contact
Align
Contact
Contact
Slide
Read
Contact
Slide
Contact
Slide
Baseline
Align
Slide
Slide the Rod to set the Baseline to
the 20mm marking on the scale
used for fillet welds.
Stopper Baseline
Grv. Depth
Weld
Align
Slide
Read
Niigata Seiki Co., Ltd.
5-3-14, Tsukanome, Sanjo, Niigata, Japan, 955-0055
Tel. : +81-256-33-5522 Fax. : +81-256-33-5518
URL http://www.niigataseiki.co.jp
WELDING THROAT
THICKNESS GAUGE
Use only for measuring work.
・Use for any purpose other than as intended may damage or wear the
instrument, and may lead to an accident.
SPECIFICATIONS
●
●
CALIBRATION
●
●
●
① Gauge Body
●
●
●
●
⇒
Contact
