WELDING GAUGE

Proven Performance for all Welding Jobs!
Measurement Gauges for general welding, steel
assembly, construction, fabrication, shipbuilding,bridges, etc.

SPEC（WGU-9M）

WGU-9M[Front][Back]●Thickness, Bead Width●Round Object OD●Step Height Straddle Width●Butt Step Height●Undercut Depth●Bevel Angle●Fillet Leg Length●Fillet Throat Thickness (Probe)●Gap Width (Probe)●Width Scale●Round Bar OD (Slider)●Expansion Guides (Body)：0〜50mm：40mm：53mm：0〜25mm：0〜25mm：0〜70°：0〜25mm：0〜15mm：2〜5mm：60mm：㋡19〜35：1/4〜1.6 x[Dimensions] (mm, approx.)
117

105

FEATURES●All the features of the WGU-8M, with additional functions formeasuring rebar gas pressure weld joints - bulge length, diameter, andcontact offset.
●The scale is marked with expansion amount for common rebar sizes
for easy Pass/Fail determination from slider position right off the scale.
●Sharp point on undercut probe improves measurement accuracy.

Rotor
Probe

78
Body

53

141

WGU-7M

WGU-8M[Front][Front][Dimensions] (mm, approx.)[Back][Back]Probe

117
105

[Dimensions] (mm, approx.)
Probe957870Rotor

Rotor

Body4282●Supports standard welding measurements.
●Easy to read design with Scale Plate and Rotor are on sameplane.

Undercut Depth（0〜25mm）●All the features of the WGU-7M plus a caliper slide with a wide range of uses,
including measuring plate thickness, weld bead width, and OD of round parts.
●Measures butt weld step alignment with up to 53mm straddle (per new Japan
MLIT notification.)●Measures bevel angles with expanded range of 0〜70°■WGU-7M・8M・9M (common features)

Bevel Angle（WGU-7M：0〜60°）（WGU-8M・9M：0〜70°）

EXAMPLESCAUTION:

Fillet Throat Thickness（0〜15mm）

Taper Gauge（2〜5mm）
Plate Thickness（Scale）●This is a precision measuring tool; Handle With Care.
●After use, coat with rust preventive oil before storage.
●Use only for intended purpose. Misuse may cause accident or injury.

■WGU-8M・9M (common features)

OD for Round Parts
Bead Width（WGU-8M：up toȭ30mm）（WGU-8M：0〜50mm）（WGU-9M：up toȭ40mm）（WGU-9M：0〜50mm）
Gas Pressure Welding Bulge, etc.

Step Height Straddle Width（WGU-7M：42mm）（WGU-8M・9M：53mm）
Step Height （0〜25mm）

EXAMPLES

Fillet Leg Length &Bead Height（0〜25mm）

53

FEATURESFEATURES

EXAMPLES

BodyGas Pressure
Weld Expansion■WGU-9M

Bulge Length

Contact Surface Offset

Niigata seiki Co., Ltd.
5-3-14, Tsukanome, Sanjo, Niigata, Japan, 955-0055
Tel. : +81-256-33-5522 Fax. : +81-256-33-5518

MAIL intl.sales@niigataseiki.co.jp
URL http://www.niigataseiki.co.jp
E324-T7 2011

[Front]

WG-2(L)FEAT.

●Makes welding QC work efficient and easy.
●Rugged and convenient. (Comes withplastic case.)

FEAT.

WG-1(M)[Front][Back][Back]

70

70.5
56.8

[Dimensions]●Makes welding QC work efficient and easy.
●Rugged and convenient. (Comes with plastic case.)●With convenient undercut function.

14[Dimensions]Rotor(mm, approx.)

Rotor

41(mm, approx.)
Probe

67

46.8

Probe

Body

Body

EXAMPLES ■BEAD MEASUREMENTS

APPLICATIONSRod OD

Leg Length

Bead Height■MATERIAL
PREP.

Fillet Throat

Length（≦40mm）

WG-1（M）：≦φ10mm
WG-2（ L ）：≦φ20mm

Gap・Hole

WG-1（M）：≦3.0mm
WG-2（L）：≦5.0mmDetailView

UNDERCUT

Meas.
Angle

Step・Thickness
Bevel Angle

Root Gap

WG-3

Plate Thickness

WG-5

FEATURES●The latest productin the WG Series!
Updated design forimproved usability.
●The longest
measurement
range of available
welding gauges. (※)（37.5）

90

Root Surface Height※Based on Leg Lengthand Throat Thickness,
July 2012 market survey.

（Reading＋90°）※WG-2 only（10mm）

UNDERCUT GAUGE

WGU-2SFEATURES●Fast and easymeasurement of undercut
depth and length.
●High accuracy: 0〜2mm
range (0.2mm graduations.)[Dimensions] Undercut Length

Undercut Depth
Scale

Measurement Scale(mm, approx.)
6.5

9052Angles（≦20mm）

108

1.55062（4.5）

125177125[Dimensions](mm, approx.)

7

EXAMPLES ■WG-3・WG-5 (common features)①Fillet Weld
Leg Length②Fillet Throat
Thickness（0〜50mm）（0〜50mm）③Bead Height（0〜10mm）※Straddle Width : 60mm

Probe105117

Meas. Base (Adj.)

Adj. Groove

FDW-1

1.5
12

Meas. Base (Fixed)

UNDERCUT GAUGE[Dimensions] (mm, approx.)
1mm Rev.
CounterBezel④Step Height⑤Depth・Step（0〜50mm）※Straddle Width:53mm■WG-3 only
⑦Undercut
Depth（0〜50mm）⑧Bevel Angle（0〜60°）⑨Root Gap

（0.5〜5mm）（0〜5mm）⑩PlateThickness（0〜30mm）

Meas. Base(Dial Gauge)（0〜35mm）■WG-5 only

0.01mm PointerMeas. Base x 2 (Adj.)

Undercut
Depth
Scale Plate⑥PlateThickness

Probe
Setscrew
Probe
SpindleFEATURES

Scale Plate
Lock Screw

55(Fixed)

100132~ 38~ 61

Adj. Groove●Fast and accurate one-touch undercut measurements.
●Dial Gauge for high accuracy.
(Uses a standard 0.01mm Dial Gauge.)●Meas. Range = 0 to 4.00mm (0.01mm graduations, ±0.04mm accuracy.)●3-point base for stability and accuracy.
●Adjustable measurement base for different surface conditions.
●Measurement base slide range, ~23mm.
●Hex wrench included for 0-Point adjustment and Dial Gauge
replacement.

ANGLE GAUGE WGA-65

ANGLE PROTRACTOR AP-130
FEATURESFEATURES●Direct measurement of joint groove angle.
●Bevel gauge has sharp tip to measure angles
for 0mm root gap for 15mm plates, or thinner.
graduations.
●Easy to read, large scale has 0.5°
●Notched scale plate for measuring T-joints
without interference.
●Satin finish measurement scale for highvisibility in the field.
●Rugged and convenient. (Comes with plasticcase.)[Dimensions][Dimensions](mm, approx.)(mm, approx.)●Wide range of angle measurements for
welding operations.
●Measures angles directly without interference
from weld bead.
●Measures interior and deflection angles for
sheet metal bending operations.
●Satin finish for easy to read measurement
scale.
●Rugged and convenient. (Comes with plasticcase.)

105

EXAMPLES

EXAMPLES
ȭ90

117.5
30
3032

Butt Joint Groove Angle
Plate. 30mm, Angle 65°(Max.)

6390

T-Joint Groove Angle
Plate 30mm, Angle 25°(Min.)SPECS●Accuracy：±0.5°●Groove (Bevel) Angle：
Scissors Mode 30°〜130°●Graduations：1°●Butt Joint, Pressure Weld
Deflection Angle：0°〜 90°●Welded Stud, Flange Angle：0°〜180°

SPECS●Accuracy：±0.5°●Groove Angle：25°〜 65°（Graduations：0.5°）●Joint・Stud Angle
After Welding：70°〜110°（Graduations ：1°）

Weld Joint Angle
Angle 110°(Max.)

Weld Joint Angle
Angle 70°(Min.)

ANGLE LIMIT GAUGE WAL 2542・4562

Flange, Plate Joint Angle
Angle = 160°
(Range: 0〜180°)

Weld Joint Angle
Angle = 110°(Range: 0〜180°)

Scissors Mode
Angle = 65°(Range; 30〜130°)

ROOT GAP LIMIT GAUGE WRL 310・1118

FEATURESFEATURES●Fast Pass/Fail testing of groove angle and fillet
weld size.
●Set of 4 in plastic case.
●Includes ball chain.

●Fast Pass/Fail testing of root gap and bead height.
●Set of 4 in plastic case.
●Includes ball chain.

SPECS[WAL2542]

Rebar Butt Joint Angle
Angle = 10°(Range: 0〜90°)[WRL310]●Accuracy: Length, Depth: ±0.1mm, Angle: ±1°●Groove Angle: 25°〜62.5°(2.5°steps)●Fillet Throat Depth: 4〜11mm (1mm steps)●Fillet Leg Length: 5, 7, 8, 10, 11, 13, 14, 15mm

SPECS
●Accuracy : ±0.1mm●Root Gap : 3〜18mm●Bead Height・Leg Length : 2〜17mm●Meas. Scale : 20mm

EXAMPLES

EXAMPLES

Butt Joint
Bead Height

Leg Length[WRL1118]
Groove Angle(Internal Angle)

FilletThroat DepthTh
roatD
epthAWG-10

Leg Length

FEAT.

[WAL4562]

Butt Joint Groove Angle(Internal Angle)

Fillet
Leg Length

Fillet Leg Length●Measures fillet throat depth and bead height with ease.
●Easy to read digital version GDCS-20WG also supports
communication via separately available Bluetooth Box.

T-Joint Root Gap

Butt Joint Root Gap■BEAD MEASUREMENT[Dimensions](mm, approx.)
57.5

14.5

Calibration Master（GDCS-20WG Accessory）

54

GDCS-20WG

100

Bead HeightThroat Depth

AWG-10: Max.: 8mm
GDCS-20WG: Max.: 10mm

AWG-10: Max.: 11mm
GDCS-20WG: Max.: 20mm

■ MATERIAL PREP.

701669312070Groove Angle(60°, 70°, 80°, 90°Fixed Gauges)

PATENTED WELDING GAUGES FOR ALL APPLICATIONS

Pressure Weld

Post Weld

Machining and Assembly (Material Prep.)

Measurement●Measurement and Product Cross Reference
TaperGauge

WG-1

WG-2

WG-3

WG-5 WGU-7M WGU-8M WGU-9M WGU-2S FDW-1 WRL310 WAL2542 AWG-10 GDCS-20WG WGA-65 AP-130

1 T-Joint Gap

○○

○

○

−○

○

○

−−

○

−−−−−

2 Lap Joint Gap

○○

○

○

−

○

○

○

−−○

−−−−

−

3 Butt Joint Step

○○

○

○

−

○

○

○

−−○

−−−−

−

4 Root Gap

○○

○

○

−○

○

○

−−○

−−−−

−

5 T-Joint RootGap−−−−−−−−−−○−−−−−

6 Root Surface

−

○

○

○

○

○

○

○

○

−

○

−

−

−

−

−

7 Bevel Angle

−

○

○

○

−

○

○

○

−

−−−−−

−

○

8 Groove Angle

−

−

−

−

−

−

−−

−

−

−

○

○

○

○

−

9 T-Joint
Groove Angle

−

−−

−

−

−

−

−

−−

−

○

−

−

○

−

10 Edge
Misalignment

−

○

○

○

○

○

○

○

−

−−−

−−−

−

11 Fillet Leg
Length−

○

○

○

○

○

○

○

−

−

○

○

−

−

−−−

○

○

○

○

○

○

○

−

−

−

○

○

○

−

−

−

○

○

○

○

○

○

○

−

−

○−

○

○

−

−

−

○

○

○

○

○

○

○

−

−

○

−

○

○

−

−

15 Undercut

−

−

○

○

−

○

○

○

○

○

−

−−−−−

16 Butt Joint
Misalignment

−

−

○

○

○

○

○

○

−

−−

−

−−−

−

17 Butt Joint
Angle

−

−−−

−−−−−−

−

−−−

−

○

18 Flange Angle−−−−−−−−−

−

−−−

−

○

○

19 Stud Angle−−−−−−−−−−−−−−○○

20 Bead Surface
Irregularity

−

−−

−

−

−

○

WRL1118 WAL4562

Gauge
No. Description Diagram

12 Fillet ThroatThick.
13 Butt BeadHeight
T-Joint
14 Bead Height

21 SwellDiameter−

22 Swell Length−−−−−−−−−○−−−−−−−−−※○−−−−−−−−−※○−−−−−−−−※○−−−−−−−−−−−−−−−−○

23 Contact
Surface Offset

−−−−−

−

24 Angle−−−−−−−※Calculation of desired dimension value required for gas pressure welding.

●Welding Gauge Specifications
Model
WG-1
WG-2
WG-3
WG-5

Material
StainlessStainlessMeas.
ScaleBeadHeight40mm10mm

4.3mm Plate

WGU-7M Stainless 1.5mm PlateThroatUndercut
BeadThickness
Depth Root Gap Width−20mm

4.3mm Plate

Stainless 7mm Plate
Satin Finish

LegLength

10mm
0.1 graduations−30・35mm

0.5〜3mm
−10mm

10mm

50mm

50mm

25mm

25mm

15mm

10mm

0.5〜5mm5mm

0.5〜5mm

−

−25mm

2〜5mm

−50・60mm

WGU-8M Stainless 1.5mm Plate−BarOD

Length Groove (Bevel)
Accuracy
Angle

10mm

±0.4mm−−−−0〜60°, Grad.: 5°−−0〜70°, Grad.: 5°

−

−−−−

−±0.03mm

60・70・80・90°−−−± 0.2mm20mm (For Gaps:± 0.4mm)

0〜60°, Grad.: 5°±0.4mm

0〜60°, Grad.: 5°10mm−30mm60mm

WGU-2S Stainless 1.5mm Plate

100mm

FDW-1

Stainless

1.5mm Plate

Body: 5mm Stainless
Probe: 1.9mm
Body:5.7mm Stainless
GDCS-20WG Probe:3.2mm
Plastic Display Unit

AWG-10

WRL310

Stainless−−20mmWRL1118 Stainless 2mm Plate
WAL2542 Stainless 1.5mm Plate−

WAL4562 Stainless 1.5mm Plate
WGA-65AP-130

Stainless 1.5mm Plate
Satin Finish−±0.7°±0.7°−±2°40mm
2mm−−−(Accy: ±0.1mm)

8mm−11mm−−−

−

−

−

−

3〜10mm(1mm steps)
11〜18mm(1mm steps)−−±0.1mm

−

−

−

−

−

−

−

−

±0.1mm25・27.5・30・32.5
35・37.5・40・42.5°
45・47.5・50・52.5
55・57.5・60・62.5°

−

−

±1°

−

−

−

−

−

25〜65°, Grad.: 0.5°

−

20mm

10〜17mm 10〜17mm(1mm steps) (1mm steps)
−
2〜9mm
2〜9mm
(1mm steps) (1mm steps)
5・7・8・10mm 4〜7mm(1mm steps)(fixed)−11・13・14・15mm 8〜11mm(1mm steps)(fixed)−−−±0.6mm−4mm(Accy: ±0.04mm)

10mm

2mm Plate−±0.6mm

0〜50mmWGU-9M Stainless 1.5mm Plate

Butt Flange, Angle
Stud Accuracy
Angle Angle−±0.2mm(Scissors Mode)
30〜130°, Grad: 1°

70〜110°±0.5°
0〜90° 0〜180°