657S STARRETT Sung

Review STARRETT Sung Old Shop Stock 1/4 Inch Holes

The Starrett 657S Sungauged 1/4 Micrometer is a precision measuring instrument designed for the most demanding metrology applications. This micrometer is part of Starrett's SG (Sungauged) series, which features a unique sun-gauging process that ensures unmatched accuracy and consistency.

The 657S micrometer boasts a 1/4 inch (6.35 mm) jaw capacity, making it suitable for measuring larger components or dimensions. Its anodized aluminum barrel is lightweight yet robust, offering excellent durability and resistance to corrosion. The micrometer's thimble and spindle are made of hardened steel for precision and longevity.

The 657S micrometer's most notable feature is its sun-gauged anvil and spindle. Sun-gauging is a proprietary Starrett process that involves machining the measuring surfaces of the anvil and spindle with a high-precision grinding wheel under the direct light of the sun. This process eliminates any potential thermal stresses, ensuring that the measuring surfaces remain perfectly flat and parallel.

The micrometer's anvil features a fine 1/100th inch (0.00254 mm) pitch thread, which allows for fine adjustments and precise readings. The micrometer's vernier scale has a 0.001 inch (0.0254 mm) graduation, enabling accurate readings to the thousandth of an inch. The scale is also etched with clear, easy-to-read markings.

The 657S micrometer comes with a protective hard case, which keeps the instrument safe during storage and transportation. The case also includes a felt-lined compartment for storing the micrometer's anvil and spare thimble.

In summary, the Starrett 657S Sungauged 1/4 Micrometer is a high-precision measuring instrument designed for the most demanding applications. Its sun-gauged anvil and spindle ensure unmatched accuracy and consistency, while its lightweight yet robust design and fine graduations make it a versatile and reliable tool for metrology professionals.

Pros and Cons of Buying a Starrett 657S SUNG 1/4 Micrometer

The Starrett 657S SUNG 1/4 Micrometer is a precision measuring instrument used for making highly accurate measurements in various industries. This tool is renowned for its durability and precision. In this analysis, we will discuss the advantages and disadvantages of purchasing a Starrett 657S SUNG 1/4 Micrometer.

1. High Precision: The Starrett 657S Micrometer provides extremely accurate measurements, making it suitable for industries that require precise measurements.

2. Durable Construction: The micrometer is built with high-quality materials, ensuring it can withstand the rigors of daily use. Its hardened steel components make it resistant to wear and tear.

3. Easy to Read: The micrometer has a clear, easy-to-read scale and a thumb screw that allows for quick and easy adjustments.

4. Versatile: The 1/4 inch (6.35mm) anvil size makes it suitable for use with various types of workpieces and other measuring instruments.

5. Calibration: Starrett offers calibration services for this micrometer, ensuring that it remains accurate over time.

1. Expensive: The Starrett 657S SUNG 1/4 Micrometer is more expensive than some other micrometers on the market, making it a significant investment for some users.

2. Requires Proper Care: To maintain its accuracy and performance, this micrometer requires regular cleaning and care.

3. Heavier Than Some Competitors: Compared to some other micrometers, the Starrett 657S is heavier, which could make it less suitable for users who need to carry their tools frequently.

The Starrett 657S SUNG 1/4 Micrometer is a high-precision, durable, and versatile measuring instrument. Its advantages include its extreme accuracy, robust construction, easy-to-read scale, and versatility. However, its high cost and the need for proper care may deter some potential buyers. Ultimately, if your industry requires highly precise measurements, and you can afford the investment, the Starrett 657S SUNG 1/4 Micrometer is an excellent choice.

If you need a high-precision micrometer for industrial applications and have the budget for it, the Starrett 657S SUNG 1/4 Micrometer is an excellent investment. Its durability, ease of use, and calibration services make it a valuable addition to any toolkit. However, if you're on a tight budget or only require occasional, less precise measurements, there are more affordable options available.

Details:

Key specifications compatibility, dual mounting holes: features two identical 1/4 6.3mm openings. The Starrett 657S is a highly durable, American-made indicator snug sleeve designed to adapt various dial indicators and attachments magnetic base setups. Manufactured by the l.s. Starrett snug 657S, 1/4 holes.

Condition is very good no scratches or damage. Indicator compatibility: adapts Starrett 196, 650, and 651 series dial indicators, attachment capability: secures the 657y indicator attachment.

specifications busitestercalib:

• brand: Starrett
• mpn: 657s
• country of origin: United States
• unit type: Unit

returns busitestercalib:

• paid by: seller
• method: money back
• time: 30 days
• policy: returns accepted

shipping busitestercalib:

• class: standard
• transit: 4-8 days
• carrier: usps
• type: calculated
• service: usps ground advantage

payments busitestercalib:

• credit card: discover
• wallet: google-pay
• other

general busitestercalib:

• category: Business & Industrial > Test, Measurement Inspection > Testers Calibrators

offer busitestercalib:

• availability: in stock
• prices: $16.99–$45.53
• item condition:
  • Used
  • New
• in stock #: 5
• sold #: 4
• options: ship-to-home
• started: june 5, 2026

seller busitestercalib:

• rating: 100.0%
• # reviews: 2399
• city: chino hills, california