+1 (619) 466-2255
info@cochranandcompany.com
3774 Grove Suite C, Lemon Grove, CA 91945
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Dorsey Metrology Distributor

Cochran and Company

When accuracy matters, professionals choose Dorsey Metrology. At Cochran and Company, we bring you precision-engineered indicators, comparators, and gaging tools trusted by top manufacturers and metrology labs across the globe. Unlock exactness and repeatability with American-made tools built to last.
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The Gold Standard in Dimensional Inspection

Dorsey Metrology has built its reputation on uncompromising quality, innovation, and American manufacturing excellence. Whether you're measuring linear dimensions, checking tolerances, or verifying part compliance, Dorsey offers:

  • Ultra-precise indicators & dial test tools

  • Versatile bench comparators

  • Rugged bore gages and ID/OD tools

  • Custom-engineered gaging systems

Real Solutions, Real Results

Clients Trust Us to Deliver Precision and Reliability
"Cochran and Company helped us find the exact indicator we needed for a critical assembly process. They knew the specs, sourced it fast, and followed through like pros."
Manufacturing Engineer, Aerospace Supplier
"We’ve relied on Dorsey products for years. Now we rely on Cochran and Company to make sourcing fast, easy, and affordable."
QA Manager, Medical Device Company
"We had a tight tolerance project that required highly specialized gaging. Cochran and Company guided us through the selection and connected us with a custom Dorsey solution — it saved us time and prevented costly rework."
Lead Inspector, Precision Machining Firm
The Tools You Can Count On
Top-Selling Dorsey Products Available Through Us
Indicating Devices
Jam Proof Dial Indicators
Dorsey's high amplification dial indicators feature a shock proof "following" type jeweled movement
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Traditional Dial Indicators
Dorsey's traditional rack and pinion dial indicators feature heavy duty forged bronze cases
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Digital Indicators
Dorsey offers the most popular styles of digital indicators to complement our gages.
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Dial Indicating Units
Dorsey standard dial indicating units are designed to replace dial unit assemblies on old Standard Gage brand dial bore gages.
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Accessories
Dorsey offers a wide range of accessories to support its primary metrology products, such as bore gages and optical comparators.
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Indicator Tools
Dorsey Metrology International manufactures a range of precision measurement tools, including electronic and traditional dial indicators.
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Direct Reading Gages
Thickness Gages
Recommended for quick thickness checks of flat sheet materials and wide variety of small parts.
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Bench Gages
The BG Direct bench gage utilizes various models of a dial or digital indicators.
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Countersink & Chamfer Gages
Accurate measurement of the top diameter of tapered holes, countersinks, chamfers center drill holes, valve seats.
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Standard Depth Gage
Dorsey Metrology offers a Standard Depth Gage available with either a dial or digital indicator.
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"V" Base Dial Depth Gage
Used to measure depths of small holes, engravings, rivets, or slots with extreme accuracy.
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MDG Series Depth Gages
The MDG series of modular indicating depth gages are available as fixed or adjustable models.
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DDG Series Depth Gages
Dorsey DDG style Depth or Height gages are used to measure distances from one surface to another or from one surface to a machine/tool fixture.
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Bearing Radial Play Gage
The S-3 comparator stand anvil can be replaced with a radial play fixture and accessories to check the internal clearance of miniature bearings.
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CPF Concentricity Fixture
The roto round is an adjustable fixture used to check concentricities, run-out, and or TIR of one or more surfaces to a basic diameter.
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CPF-1 Concentricity Fixture
CPF-1 fixture is for use with parts 3 - 12" (75mm - 300mm) in diameter with maximum weight of 150 lbs (70kg).
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CPF-2 Concentricity Fixture
CPF-2 fixture is for use with parts 10 - 30" (250mm - 760mm) in diameter with maximum weight up to 1000 lbs (454kg).
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DDGM Setmasters
DDGM setmasters is the companion to DDG series depth gages.
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ID/OD Gages
Pin Type Dial Bore Gages
Pin type dial bore gages are an accurate, economical and versatile alternative to the ID micrometer.
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BC Universal ID/OD Bench Comparators
This comparator offers 2 or 3 point measurements for both ID and OD on one benchtop plate.
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Indicating Disc Gages
Indicating disc gages are used to measure I.D.s or O.D.s around shafts and other obstructions such as grooves
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DYS Groove Gages
Combines a light weight, compact rigid cast frame and a patented ball bushing slide with a series of interchangeable gaging arms.
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DYN Groove Gages
Dorsey's Dynamike Model DYN groove gage combines a patented ball bushing slide with a series of gaging arms to suit almost any application.
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Universal Gage - ID/OD/Location Thickness
Designed to combine our proven patented precision linear movement with a frame that accommodates a wide variety of contacts.
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Adjustable Bore Gage Setmasters
Bore gages are comparator type instruments used to compare parts being manufactured (unknown sizes) to known dimensions.
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Ring Masters
Ring gauges, often named ring masters, are used in applications where the effective part diameter must be inspected or where ring gauges are preferred
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Disc Masters
Disc masters are widley used for setting comparators, adjustable limit or dial snap gages, micrometers, etc. and for periodically checking these settings.
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Indicating Plug Gages
Dorsey’s indicating plug gages are used for repetitive bore measurement applications where extreme accuracy is important.
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Plug, Pin, Thread Gages
Plug gages are manufactured in three basic AGD styles. Wire type, also known as pin gages, taper lock and trilock.
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Standard Series Bore Gages
Dial bore gages are used to quickly inspect hole diameter as well as to detect and measure all kinds of bore conditions such as taper
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DBL Series Bore Gages
DBL bore gages are designed to be lightweight, versatile, accurate, and are ideal for toolroom and production applications.
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DBL Offset Series Bore Gages
Offset bore gages are used during machining or jig grinding operations to avoid disturbing machine tool setup.
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Internal Pitch Diameter Bore Gages
The Internal Pitch Diameter gage is ideally suited to check the internal pitch diameter of gears and splines.
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RLBG Series Bore Gages
The RLBG Series retractable bore gages are designed per application.
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Easy Bore Series Bore Gages
These rugged retractable bore gages are ideal for inspection on the shop floor or in the laboratory.
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Versatile Snap Gage
Measuring balls and other spherical items is one of the most popular applications of the Versatile Snap Gage.
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SSG Style Snap Gages
This design of rugged production line snap gages has been the industry standard for more than 50 years.
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SDN Style Snap Gages
This rugged snap gage features a precision box-way range adjustment channel to protect the anvil shafts and maximize frame clearance.
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Long Range Snap Gages
Measuring balls and other spherical items is one of the most popular applications of the Versatile Snap Gage.
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Jaw Gage
The model J2 jaw gage features Dorsey’s proven precision lapped chrome/steel bushing in a rigid cast iron frame.
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PMA Series Adjustable Setmasters
6" range and .50" fine adjustment
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Retractable Pin Gages
Adjustable inside diameter pin gages are used to check straight bores, grooves, spherical radii, and spline and gear pitch diameters.
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Large Diameter Gages
LDA Series Large Diameter Gages
Our most popular adjustable series of ID/OD gage uses rigid steel tubing, cast end blocks
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LDF Series Large Diameter Gages
LDF series production gages utilize fixed frames which are more rigid, lighter and more compact than LDA series adjustable gages.
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LDVA Series Large DIameter Gages
The LDVA is similar to the LDA series gage, except that it offers adjustment in the vertical axis to accommodate depths up to 5".
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LDRA Series Large Diameter Gages
The LDRA gage uses twin parallel rails for a versatile and economical adjustable frame.
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LDDA Series Large Diameter Gages
These direct reading gages feature lightweight rigid steel tubing, and cast end blocks to accommodate depths up to 5".
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LDDF Series Large Diameter Gages
LDDF Series gages includes all the same features as the LDDA series gages except both cast end blocks are rigidly bolted and pinned in place.
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LDLTA Series Large Diameter Gages
The LDLT series gage uses 1:1 ratio lever principle.
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LDLTF Series Large Diameter Gages
Includes all the same features as the LDLTA series gages except both cast end blocks are rigidly bolted and pinned in place.
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LBBS Series Large Diameter Gages
Use a precision bushing slide mechanism for applications where retraction is required beyond the range of the indicator.
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Midget Reed Gages
This economical, heavy duty production gage features a rigid steel plate frame and our bullet proof reed spring gaging transfer.
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LDAR Series Large Diameter Gages
LDAR gages feature a lightweight tubular steel frame with a reed pantograph movement.
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LDR Series Large Diameter Gages
The LDR Series gage uses a lightweight stainless steel tubular frame and a reed pantograph movement.
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LDB Series Large Diameter Gages
LDB series gages use a lightweight stainless steel tubular frame and a precision ball bushing slide mechanism.
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SMVA Setmasters
Offer the same features as the SMA Series setmasters except that they allow for vertical adjustment to accommodate various gaging depths.
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SMA Setmasters
SMA Series setmasters feature a precision ground steel rail as the rigid foundation for adjustability.
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SMF Series Fixed Frame Setmaster
SMF Series setmasters are designed to be used in a production environment where a specific set size is required.
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SSM Series Solid Frame Setmaster
Solid setmasters are ground to a specific size and are not adjustable.
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Carbon Fiber C Frame Gages
If you're using large conventional C-Frame gages that are cumbersome due to their weight.
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Optical Comparators
Metlogix M2 Readout
Is a metrology software that offers an intuitive interface and powerful features for measurement systems
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14HE Optical Comparator
The 14HE bench top comparator has the same high quality features as the other comparators in our product line
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14H Optical Comparator
The Benchmark 14H is an Erect Image benchtop comparator and is another example of our expanding range of products.
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16H / 16H CNC Optical Comparator
This extremely versatile measurement instrument features a robust cast granite composite base and our proven cast iron "ultra precision" stage system.
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16VS Optical Comparator
This dynamic vertical optical system is the first of its kind manufactured in the USA.
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24P Optical Comparator
The 24P is designed to be an all purpose measurement/inspection instrument capable of performing both light and heavy duty tasks.
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32P Optical Comparator
Clear telecentric optics and a precision solid cast iron stage to be an instrument capable of handling almost any measurement
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8700 Series Video Inspection System
The 8700 Series machine was one of the products adopted from the S-T Industries optical division acquisition.
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9100 Series Video Inspection System
The 9100 series machine was also adopted from the S-T Industries optical division acquisition.
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9700 Series Video Inspection System
The 9700 Series Video Inspection System is our largest heavy-duty model adopted from the S-T Industries optical division acquisition.
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Model 2600 Horizontal Beam
The "2600" Series 30" floor model horizontal beam optical comparator has been a leader in the industry for over 40 years.
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Optical Comparator Charts
Dorsey Metrology uses satin ground glass of superior quality for all our optical comparator glass charts.
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Watch Our Featured Videos

Get a closer look at the performance, craftsmanship, and innovation behind Dorsey Metrology tools.
Cutting new threads in quick release
Dorsey SSG Snap Gage: Setting Up Your New Gage
Dorsey Standard Bore Gage: Setting Up Your New Bore Gage

Let’s Talk Precision

Need a Quote or Product Recommendation? We’re Ready.
Tell us what you're measuring. We’ll tell you what you need — and how fast we can get it to your facility. Whether you need a single tool or a complete gaging solution, we’re here to help.
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Phone

+1 (619) 466-2255

Email

Info@cochranandcompany.com

Address

3774 Grove St C, Lemon Grove, CA 91945
Cochran and Company has been the preferred MRO supplier in Southern California for precision manufacturers, machine shops, aerospace, and OEM industries.
Available Brands
Carr Lane Manufacturing Dorsey Metrology Deltronic Gages Starrett Actek Manufacturing EZ LOK Threaded Inserts Mahr metering systems Mueller Gages Pi Tape Precision Measurement
Contact Us
+1 619 466 2255 info@cochranandcompany.com 3774 Grove St #C, Lemon Grove, CA 91945

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