special gaging - JW Donchin CO.

J.W. DONCHIN CO. 4841-43 W. Chicago Ave. • Chicago, IL 60651-3224
Ph: 773-261-2182 • Fax: 773-261-2867 • Sales@jwdonchin.com • www.jwdonchin,com
SPECIAL GAGING
Contents
Pg
Description
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SPECIAL GAGING
294
The Starrett Special Gage Division
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Proposal Information That Will Help The Starrett Special Gage Division Serve You
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Electronic Gaging Remote Display/SPC Input
Data Collection
297
Outside and Inside Diameter Gages
Inside Diameter Double-Turret Gage
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Ultra-Light Honeycomb Deep Throat and Large Diameter Gages
Ultra-Light Deep Throat Gage
Ultra-Light Large Diameter Gage
299
Multi-Readout and Special Purpose Gages
Dial Indicator Snap Gages
Quick-Adjusting Micrometer Head
300
PI-Gage for I.D. and O.D.
PI-Plate Fixture for Large O.D. or I.D. Measurement. Designed to fit your part.
PI-Plate Gage for O.D.
301
Dial Protractor Heads
Universal Bench Gage
302
Turbine Nozzle Diaphragm Opening Gages
Turbine Compressor Rotor Spacers
Single Source Your Complete Gaging System
SPECIAL GAGING
SPECIAL GAGING
The Starrett Special Gage Division
For many years, The L.S. Starrett Company has provided a unique service for building special gages that
varied from our regular line. In response to growing demand, we established the Starrett Special Gage
Division in 1958. Since then we have served the U.S. Government, NASA and virtually all industries in the
metalworking field, such as aircraft, automotive, ordnance, as well as other fields, such as high-technology
plastics and medical components.
The Special Gage Division is an independent division within the Company that devotes its total effort to
special gages only. The staff and facilities are isolated from other departments producing standard
products. However, the entire Starrett technical staff and state-of-the-art production equipment are
immediately available to the Special Gage Division as required.
Special Gage Division Mission
We design and build dimensional measuring instruments that provide guaranteed performance to meet our
customers’ specifications. We are in the business of solving measuring problems when standard gages
cannot be used.
Design and Performance
You, the customer, tell us what you need and we will design and build special gages that will perform as you
expect — gages with rugged construction for lasting use and easy-operation features. Gages are
guaranteed to meet your specifications for accurate, reliable part measurement.
Our designs are prepared on state-of-the-art CAD systems or drafted by hand. They can be supplied to you
on reproducible paper or by electronic transfer. Design work is treated in a strictly confidential manner.
Design-and-build prices are quoted at no charge. Prices are fixed at order entry.
Accuracy Guarantee
The Special Gage Division has access to our Webber Gage Division, which produces gage block base
standards. This division offers certification and calibration service in accordance with ANSI/NCSL Z540-1
and ISO Guide 25 for calibration of gage blocks and accessories. This means that the Starrett/Webber
location is at the highest level for this type of calibration. Starrett/Webber laboratory master gage blocks
are accurate to ±.000001⬙ (0.0000254mm).
Single-Source Reliability
We make and use Starrett AGD dial or digital indicators, mechanical and dial protractors, test indicators,
micrometers and vernier scales. Our electronic calipers, micrometers and indicators output to our own
various data processing collection systems. In our opinion, our service and expertise are second to none,
since we control the entire process from concept through design, manufacture, inspection and delivery —
all under one roof.
The resources of this unique problem-solving division are immediately yours to innovate, design, and build
the equipment you need to control product quality and reduce dimensional gaging costs. The following
pages demonstrate only several of the many examples of problem-solving gages.
All special gage inquiries for services, or products like the ones shown in this section, should be forwarded
directly to:
The L. S. Starrett Company
Special Gage Division
121 Crescent Street ◆ Athol, MA 01331-1915
Tel: (978) 249-3551 ◆ Fax: (978) 249-3699
e-mail: specialgage@starrett.com
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SPECIAL GAGING
Wall thickness gages.
Proposal Information That Will Help
The Starrett Special Gage Division
Serve You
About the part:
◆ Send a marked-up print showing what characteristics and what
dimensions are to be gaged
◆ We need the tolerance necessary for the dimensions affected,
and these should be written near the dimensions, if not a part of
this drawing
◆ Gage-locating surfaces should be marked on the print
◆ Show part orientation in the machine or on a bench. Indicate
which end or axis of the part is vertical or horizontal
◆ Obstructions such as clamps, arbors, fixtures, and unmachined
stock that could interfere with the gage should be noted
◆ Environmental conditions are a design consideration. Shop
conditions such as abrasive dust, high temperature, or corrosive
atmosphere affect gaging
NOTE: Drawings can be supplied on your company’s prepared borders,
reproducible paper, or by most of today’s electronic transfer
methods. You will need to supply company paper or CAD file and
drafting requirements.
Gage Information
Deep throat thickness gage.
To assist you in deciding on the most suitable type of gage, we
would like to know your preferences on the following:
◆ Type of gage: hand-held, bench fixture, multi-check
◆ Readout: dial or digital indicator, micrometer or vernier, separate
display or SPC interface
◆ Your gage specifications for design and construction
◆ Number of gage cycles per day, hour or minute
◆ Setting master or standards required
◆ Storage containers and type, if required
◆ Quantity required
◆ Delivery requirements
◆ Certification requirements, if any
◆ Technical contact – name and phone number
Your requirements will be analyzed by our Engineering Department
to apply or develop a solution. A quotation, with a concept sketch if
required, will be sent to your attention at no charge.
Large caliper with long reach for high temperature environment.
Send your information to:
The L. S. Starrett Company
Special Gage Division
121 Crescent Street ◆ Athol, MA 01331-1915
Tel: (978) 249-3551 ◆ Fax: (978) 249-3699
e-mail: specialgage@starrett.com
Lightweight “C” frame diameter gage.
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SPECIAL GAGING
Electronic Gaging
Remote Display/
SPC Input
On the Starrett WISDOM® Remote
Display, out-of-tolerance conditions
are displayed for quick interpretation
by the flashing of the large L.E.D.
display. Either “high” or “low” will be
indicated on the display. The bright
L.E.D. display is plainly visible even
in poorly lit areas.
Readings are taken quickly and
accurately. The data can be
transmitted to a PC or printer by push
button or optional foot switch or the
device itself.
Gage calibration is completed in five
seconds. The gage can give the reading
and transmit the data instantly. In contrast,
it could take up to a week to get data from
a metrology lab.
For .00005⬙ accuracy, the Starrett
cartridge-type gage heads replace the
digital indicators.
Like all of our Special Gage products, this
provides a unique solution for a
gaging problem.
Data Collection
SPC requires accurate input of product
dimensions. Cost effective data collection
will help you keep your competitive edge.
Speed and accuracy are the demands met
by this special gage and the Starrett Gage
Chek No. 776.
The Guaranteed Solution
One special gage and one Starrett No. 776
displays and stores up to eight dimensions.
The larger diameter, small diameter,
concentricity and length are all checked in
one step in the example shown here. It
takes less than ten seconds to take and
store all four dimensions.
The sum of the inputs from opposing
transducers insures .00005⬙ accuracy on
the large diameter. All other measurements
are taken to less than .0001⬙.
The actual sizes are entered into the
No. 776 display. Both the variance from
nominal size plus actual size can be
displayed.
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Internal storage on the No. 776 Display
holds data for analysis or future transfer
to a PC.
SPECIAL GAGING
Outside and Inside
Diameter Gages
Designed and built on application, this
gage features a low-friction ball bushing
direct-transfer mechanism. Typical of
all-purpose built gaging, it will repeat
within one graduation. It is made of
aluminum for light weight and to preserve
the proper “feel”. Gage contacts and rest
feet are carbide for long wear. The steel
tube master has carbide rests and pads for
accuracy and wear control.
Shown here is an outside diameter gage in
position on the setting master for setting
the indicator to zero. The top view of the
gage shows the indicator, body, rest feet
and gaging contacts. This specific gage
was designed to measure the diameter on
conical parts.
Diameter Gage with Setting Master.
Inside Diameter
Double-Turret Gage
This gage was designed to fit through a
diameter much smaller than the one to
be gaged.
A double-turret gage can check an I.D. up
to two times larger than the hole it will pass
through.
Single-turret gages can be designed for
I.D.s up to one and one-half times larger
than the hole it will pass through.
Accurate gages have been supplied that
will reach 36⬙ deep.
Gage shown open for mastering or measuring.
Gage shown folded for insertion or removal.
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SPECIAL GAGING
Ultra-Light Honeycomb
Deep Throat and
Large Diameter Gages
A large diameter or deep-throated gage no
longer has to be heavy and hard to handle.
Starrett special gage engineers have
studied the physical and structural
properties of honeycomb aluminum,
establishing standards covering the
selection and use of this lightweight
material. The results were long-range
measurement to close tolerances in handheld gages of many configurations, all
combining great rigidity with light weight
and ease of handling. It measures
diameters to 72⬙ (180cm) and throat
depths to 24⬙ (60cm).
Honeycomb aluminum material lightens gage weight.
Ultra-Light
Deep Throat Gage
This deep throat indicating micrometer
gage solves the problem of checking the
.281⬙ (±.005⬙) thickness of a fan rotor shaft
at a point nearly 15⬙ from its edge.
Ultra-Light Deep Throat Gage.
Ultra-Light Large
Diameter Gage
This gage is used as an indicating snap gage
by setting the indicator to zero with the set
master and then reading the part size
variations on the indicator. These gages can
be supplied with dial or digital indicators.
Sizes are available from 18⬙ to 24⬙ through
84⬙ to 90⬙.
A Starrett No. 234 End Measuring Rod with
insulated grips and saddle-centering
mounts is the set master.
This gage can be made into an adjustable
snap gage by fitting one end with a
micrometer and the other end with an
indicator. Other concepts are available to
suit specific requirements.
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SPECIAL GAGING
Multi-Readout and
Special Purpose Gages
This five-station fixture gage checks critical
dimensions and geometry of precision
ceramic cylinders 4 1/2⬙ long x .375⬙ O.D.
After the indicators are set to a master, the
cylinders are staged individually in two
V rests and checked as follows:
Station 1 – Overall length 4.500⬙ ±.010⬙
Station 2 – Squareness of ends to axis
and parallelism of ends
to within .002⬙
Station 3 – Longitudinal bow to within
.005⬙/inch
Station 4 – Out-of-roundness to within
.003⬙ T.I.R.
Station 5 – Wall thickness .030⬙ ±.003⬙
Features of this multi-indicator gage:
◆ Micrometer head height adjustment of
the work-staging V rests
◆ Precision ball slide mounts for dial
indicators at stations 3-4
◆ Wear-resisting carbide contacts at all
gaging stations
Inserting ceramic cylinder in gage to check squareness and parallelism of ends, longitudinal
bow and out-of-roundness.
Dial Indicator
Snap Gages
With a lightweight, aluminum frame and
low-friction ball bushing motion transfer,
.0001⬙ accuracy is insured. Simple and
rugged construction, including sturdy
dovetail slides for range adjustment, means
low maintenance and a long trouble-free life.
Once the gage is set to zero with a set
master, the indicator reads part size
directly. The indicator can be rotated and
locked for easy viewing in any position.
Digital indicators are an option for easy
reading or for SPC output.
Three size ranges are available: 6⬙ to 10⬙,
10⬙ to 14⬙, and 14⬙ to 18⬙. These gages fill
the gap between the Starrett No. 1150
Snap Gages and the Ultra-Light
Honeycomb “C” Frame Diameter Gages.
Optional contacts can be ordered
for grooves or ball contacts can
be specified.
Quick-Adjusting
Micrometer Head
A special gage equipped with this Starrett
No. 204 Quick Adjusting Micrometer Head
greatly increases the speed with which
measurements can be taken. Pressing a
button on the thimble allows the spindle to
slide along its axis to any position within its
range. Releasing the button re-engages the
spindle threads, and thimble rotation is
then used for final size adjustment.
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SPECIAL GAGING
PI-Gage for I.D. and O.D.
Starrett PI-Gages protect product quality
by maintaining critical diameter tolerances
of plastic lids and containers where
shrinkage, temperature and mold affect
parts manufacturing. The diameter
of these parts is critical to the sealing
integrity between lids and containers.
The Starrett PI-Gage checks diameters
accurately to within .001 of an inch.
Designed to measure any flexible circular
part, the PI-Gage has been in use for over
25 years. It is the industry standard for
accuracy, replacing the old 2- and 3-point
systems previously used.
PI-Plate Fixture for Large O.D. or I.D. Measurement.
Designed to fit your part.
Metal band I.D. fixture for 5-gallon pail.
PI-Plate Gage for O.D.
This gage ensures container quality
requirements with an easy-to-use gage
system. With dial or digital indicator for
SPC, this gage measures flexible product
diameters to .001⬙ accuracy.
Each gage from the 2⬙ to 4⬙ range through
the 10⬙ to 12⬙ range is quickly set to zero
with the master provided as an option. Push
the button on the indicator to insert a part
and release the button to gage a part within
±.025⬙ diameter range from the master
size. Featuring quick changes from size-tosize, ease of use and .001⬙ accuracy will
ensure process control.
It takes less than one minute to set the
band to a different master and zero
the indicator.
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Master in position to set indicator to zero.
Top of 5-gallon pail in measuring position.
SPECIAL GAGING
Dial Protractor Heads
Starrett Dial Protractor Heads for special
applications permit rapid angular
measurements. With 90º range and
graduations of 5⬘ they will assure accurate
measurements.
Specifications – Bezel diameter is 2 1/4⬙;
case thickness is 1.34⬙ from crystal to
back; .25⬙ dia. input shaft projects .63⬙
from back of case. Main dial reading to
customer specification; graduation –
specify 0º5⬘, 0º10⬘ or 0º15⬘. Also available
with balanced dials and with
counterclockwise figures in red.
Universal Bench Gage
Sizes from 0 to 4⬙ are rapidly checked to
.0001⬙ accuracy with a dial or digital
indicator. The gage range is ±.100⬙ from
the zero set point on a master. The digital
indicator holds the reading from one sweep
over the part to eliminate errors. A rugged
ball bushing motion transfer provides
accuracy for many maintenance-free years.
With optional contacts, this gage can be
quickly set up to check inside and outside
diameters, slot and groove widths, length or
thickness, and splines or gear pitch
diameters.
Move the lockable slide to reverse this
gaging direction. Attach the required
contacts and set the indicator to zero with a
master. You are ready to gage a different
part in less than five minutes.
Contacts are available for numerous
applications. Optional 2- or 3-point contact
sets are available with flat or rounded
faces, conical points, steel or carbide balls,
and pins for over-roll dimensions.
301
SPECIAL GAGING
Turbine Nozzle
Diaphragm Opening
Gages
The gage on the left, in connection with the
reference nozzle shown in the center, is a
simplified and cost effective gage to
measure throat geometry of turbine nozzle
openings. From the raw data area
calculator, SPC and other data acquisition
are easily accomplished.
The gage on the right is a rugged, proven
hydro-mechanical area flow gage suitable
for production purposes, and it has been
the industry standard for over 30 years.
Turbine Compressor
Rotor Spacers
This inspection fixture checks gas turbine
engine compressor rotor spacers for radial
size and runout at five stages.
It represents a specific Starrett special
gage capability — the designing and
building of large, ultra-precise fixture gages
mounted on Starrett precision granite
surface plates which meet or exceed U.S.
Federal Specification GGG-P-463C.
Inset: Rotor turned 360º on its axis to
determine runout and radial deviation.
Single Source Your
Complete Gaging System
Since 1958 the Special Gage Division has
been fully staffed to design and manufacture
gaging systems per customer specifications.
Whether mechanical, electro-mechanical,
computerized or manually operated we are
your one-stop supplier. With over 40 years
experience in traditional and emerging
technologies, we have the expertise to
provide you with cost effective, accurate, and
dependable gaging equipment. From bar
codes and spreadsheets to SPC and graphics,
you can have the information you want, the
way you want it. Just call, email or fax your
requirements and we will promptly prepare a
price and delivery quotation.
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Tel: (978) 249-3551 Fax: (978) 249-3699 e-mail: specialgage@starrett.com
J.W. DONCHIN CO.
www.jwdonchin.com
Precision Measuring Equipment and Industrial Supplies since 1924.
4841 W. Chicago Ave. - Chicago, IL 60651 • Phone: 773-261-2182 • Fax: 773-261-2867 • sales@jwdonchin.com
J.W. Donchin Co. was established in 1924 and has been known world wide ever since. Customer Service is our Main Focus. We offer
Expert Product Knowledge, Large Stocking Inventory and Competitive Pricing to assist you in locating and selecting the correct
tool or product to fit your needs. (J.W. Donchin Co. is one of L.S. Starrett’s largest stocking distributors.)
Contact Information:
Phone:
773-261-2182
Fax:
773-261-2867
Email:
sales@jwdonchin.com
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