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Sunnen Dial Bore Gauges
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Sunnen Dial Bore Gauges
Shock-Shield
protects dial • Standard Sunnen Dial Bore Gauges read out in tenths
from hand • Also available in five-tenths and metric (special order)
heat and • Diameter ranges from .495" to 6.000" (see chart for gauge ranges) REBUILDING CYLINDER HEAD
jarring to assure • All models below feature all-carbide gauging points, wear-proof ball crank and adjustable
accurate reliable centralizers
readings. • Include molded storage case with all tools and wrenches required for setup and adjustment

All standard GA-4141 GR-6241 GR-9241 GA-2121 / GA-2125
Sunnen Dial Bore • Measures to within .200" of • Measures to within .270" of • Measures to within .335" of GR-2241 / GR-2245
Gauges are TENTH the bottom of a blind bore the bottom of a blind bore the bottom of a blind bore • Measures to within 500" of
READING. Metric • Carbide balls replaceable • Carbide balls replaceable • Carbide balls replaceable the bottom of a blind bore ASSEMBLY & SAFETY
and .0005" readouts in the indicating fingers in the indicating fingers in indicating fingers and • Carbide balls replaceable CLEANING,
are also available only only extension points in indicating fingers and
(special order). Dial • Set with SCF-502 Setting • Set with SCF-502 Setting • Set with SCF-502 Setting extension points
can be indexed 90º Fixture Fixture Fixture • Set with CF-1126 Setting
for easy reading at • Non-retractable gauge • Retractable gauge • Retractable gauge Fixture
any angle. • Non-retractable gauge

Diameter Range Max Gauging Depth Overall Length .0001" Reading .0005" Reading
in mm in mm in mm Order No. Order No. REBUILDING SHORT BLOCK
.495" to .750" 12.6 to 19.0 7.00" 175 11.8125" 302 GA-4141 ————
.740" to 1.19" 18.9 to 30.2 12.00" 300 17.6875" 451 GR-6241 ————
1.18" to .2.00" 30.0 to 50.8 12.00" 300 17.75" 452 GR-9241 ————
2.00" to 6.00" 50.0 to 150.0 12.00" 300 17.00 432 GA-2121 GA-2125
2.00" to 6.00" 50.0 to 150.0 24.00" 600 29.00 737 GR-2241 GR-2245

Small Diameter Dial Bore Gauge FLYWHEEL GRINDING CRANKSHAFT/
• Measure extra small bore from .054" (1.37mm) to .535" (13.59mm)
• Includes tenth reading indicator, probe retractor and a probe
retainer bushing in a reinforced nylon insulating shroud
• Set with the SCF-502 Setting Fixture
• Probe and Transfer Pin Set includes 6 probes and
2 matching transfer pins covering a .165" to .535"
(4.2 to 13.6mm) diameter range
• Additional probes and transfer pins available by special order TOOLS & SUPPLIES MISCELLANEOUS
(see the Goodson website for more information)
Adjustable Description Order No.
centralizers for Dial Indicator Assembly GR-3000
proper centering Probe & Transfer Pin Set G-3050
over the entire
diameter range. Patented wear-proof
One twist adjusts ball crank assures
gauging tension repeatability over a CF-1126 shown
so head goes long life. with GR-2121 Dial Bore Gauge TOOLING BRAKE SERVICE
into and out of Setting Fixtures
any size hole Carbide indicating
smoothly. points are long • 2 models combine to cover a
wearing and continuous range of .054" to 8" in
.0001" increments
replaceable. SCF-502 with
CF-540 Size Setting • Heavy stress-relieved cast iron bases
Adaptor shown with • Lapped carbide micrometer anvils
Transfer Rod GR-3000 Gauge • Built-in magnifier TOOLS MEASURING
• Each setting fixture includes a master
Indexable Centralizer Points calibrating ring
SCF-502 shown • Size Setting Adaptor centers gauge
with GR-6241 probes between parallel reference
surfaces on SCF-502 Setting Fixture
• Replacement parts available

Range Order No.
.054" to 2.00" SCF-502 HARD PARTS V-TWIN & METRIC
Size Setting Adaptor CF-540
2.00" to 8.00" CF-1126
Gauges & Setting Fixtures Solld Separately
118 order at 1-800-533-8010 (outside the US & Canada, 1-507-452-1830) or online at www.goodson.com Goodson is only authorized to ship Sunnen products within the Western Hemisphere 119
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