Let’s Dive into L.S. Starrett 708az .0001in Dial Test I 681-64212
The L.S. Starrett 708az .0001in Dial Test I 681-64212 is a precision measuring instrument designed for machinists, toolmakers, and anyone needing to determine extremely small variations in dimensions. L.S. Starrett, a name synonymous with quality and accuracy, has delivered what appears to be a top-tier dial test indicator, but at a premium price point that demands scrutiny. This review will delve into the specifics of this tool, exploring its performance, durability, and overall value, so you can decide if it’s the right investment for your needs.
My search for the L.S. Starrett 708az stemmed from a growing frustration with cheaper dial test indicators that consistently failed to provide repeatable, accurate measurements. I needed a reliable tool capable of verifying the flatness and parallelism of critical components in firearms builds and high-precision reloading equipment. The promise of Starrett’s reputation and the .0001in resolution were irresistible.
Upon unboxing, the L.S. Starrett 708az immediately exuded quality. The weight felt substantial, suggesting robust construction, and the finish was flawless, instilling confidence in its precision. The movement of the dial was incredibly smooth, a clear indication of the tight tolerances within.
Compared to my previous indicators from brands like Mitutoyo and Fowler, the Starrett felt noticeably more refined. While the Mitutoyo offered comparable accuracy on paper, the Starrett’s smoother action and overall build quality instilled greater confidence. The Fowler felt flimsy and prone to error in comparison. My hope was that this translates to superior longevity and reliability in the long run.
My initial excitement was tempered slightly by the price. At over $1000, the L.S. Starrett 708az is a significant investment. Only thorough testing could determine if the performance justifies the cost.
Real-World Testing: Putting L.S. Starrett 708az .0001in Dial Test I 681-64212 to the Test
First Use Experience
My initial testing of the L.S. Starrett 708az took place in my machine shop, where I used it to verify the flatness of a newly lapped receiver face on an AR-15. The shop environment is typically subject to temperature fluctuations and occasional dust. The indicator was mounted on a magnetic base, allowing me to sweep the surface and precisely identify any deviations.
Even with minor temperature variations, the indicator provided consistent readings. It requires a delicate touch, but the fine resolution quickly revealed minute imperfections that I would have missed with other tools. The ease with which I was able to zero the indicator and the clear, uncluttered dial face made the process efficient and straightforward.
After the first use, I was impressed with the sensitivity and accuracy of the Starrett. There were no immediate issues. The only surprise was how easily minor vibrations could influence the reading, requiring me to work deliberately and minimize external disturbances.
Extended Use & Reliability
After several months of regular use, the L.S. Starrett 708az has consistently delivered exceptional performance. I’ve used it for a variety of tasks, from checking the runout on lathe spindles to verifying the trueness of reloading dies. It has become an indispensable tool in my shop.
The Starrett shows no signs of wear and tear. The dial movement remains smooth, and the accuracy has not diminished. The chrome finish is durable and resists scratches.
Maintaining the 708az is simple; a light wipe with a clean cloth after use is usually sufficient. I occasionally apply a small amount of precision instrument oil to the moving parts to ensure smooth operation. Compared to my previous dial test indicators, the Starrett requires significantly less maintenance and has proven to be far more reliable. It handily outperforms my previous indicators.
Breaking Down the Features of L.S. Starrett 708az .0001in Dial Test I 681-64212
Specifications
The L.S. Starrett 708az .0001in Dial Test I 681-64212 is a highly precise measuring instrument with the following specifications:
- Resolution: .0001 inch. This ultra-fine resolution allows for incredibly precise measurements of even the smallest deviations.
- Measuring Range: Not explicitly stated in the provided information, but typical dial test indicators have a limited range.
- Weight: 1.14 lb. The weight suggests solid construction and helps dampen vibrations during use.
- Availability: Sold as Each, meaning it’s a single unit purchase.
- Manufacturer: L.S. Starrett. A trusted name in precision measuring tools.
These specifications matter because they dictate the tool’s accuracy and suitability for specific applications. The .0001-inch resolution is critical for tasks demanding extreme precision, while the weight and build quality contribute to its stability and longevity.
Performance & Functionality
The L.S. Starrett 708az excels at accurately measuring minute variations. Its smooth and precise movement allows for repeatable readings, making it ideal for tasks like verifying flatness, parallelism, and runout.
The primary strength of this tool is its accuracy and repeatability. The only potential weakness lies in its sensitivity to vibrations, which requires a stable work environment and a delicate touch. Overall, the 708az exceeds expectations and delivers professional-grade performance.
Design & Ergonomics
The build quality of the L.S. Starrett 708az is exceptional. The materials used are high-quality, and the construction is robust. Its weight contributes to a stable feel.
The indicator is relatively user-friendly. A clear, uncluttered dial face and easy zeroing contribute to a smooth workflow. Some users may require a bit of practice to develop the necessary delicate touch.
Durability & Maintenance
Given the robust construction and high-quality materials, the L.S. Starrett 708az is expected to last for many years with proper care. The chrome finish resists scratches and corrosion.
Maintaining the 708az is relatively simple. Regular cleaning and occasional lubrication of moving parts are typically sufficient to ensure smooth operation.
Accessories and Customization Options
The provided information doesn’t list specific accessories included with the L.S. Starrett 708az. Dial test indicators typically require a mounting base (magnetic or otherwise) and various probe tips, which are usually sold separately.
The Starrett is likely compatible with a wide range of standard dial test indicator accessories from other brands, such as replacement tips, extension rods, and various mounting options. This allows for customization to suit specific applications.
Pros and Cons of L.S. Starrett 708az .0001in Dial Test I 681-64212
Pros
- .0001 inch Resolution: Provides exceptionally precise measurements.
- Smooth and Precise Movement: Ensures repeatable readings and a confident user experience.
- Durable Construction: Built to last for years with proper care.
- Trusted Brand: L.S. Starrett has a long-standing reputation for quality and accuracy.
- Versatile: Suitable for a wide range of precision measuring tasks.
Cons
- High Price: Significantly more expensive than many other dial test indicators.
- Vibration Sensitivity: Requires a stable work environment and a delicate touch.
Who Should Buy L.S. Starrett 708az .0001in Dial Test I 681-64212?
The L.S. Starrett 708az .0001in Dial Test I 681-64212 is perfect for:
- Machinists requiring extreme precision.
- Toolmakers.
- Gunsmiths who need accurate measurement of firearm components.
- Reloaders demanding high-precision measurements of reloading dies and ammunition components.
- Anyone who values quality and accuracy above all else.
Who should skip this product? Anyone on a tight budget or those who only need occasional, non-critical measurements may find the Starrett overkill. Cheaper alternatives will likely suffice.
A must-have accessory is a high-quality magnetic base to ensure stable mounting and precise positioning. Consider a set of various probe tips to adapt the indicator to different measuring tasks.
Conclusion on L.S. Starrett 708az .0001in Dial Test I 681-64212
The L.S. Starrett 708az .0001in Dial Test I 681-64212 is an outstanding precision measuring instrument. Its exceptional accuracy, smooth operation, and durable construction justify the high price for those who demand the best.
While the price is a significant consideration, the value proposition is strong. The Starrett’s superior performance and longevity will likely outweigh the initial investment for serious machinists and precision enthusiasts.
I wholeheartedly recommend the L.S. Starrett 708az to anyone seeking the highest level of accuracy and reliability in a dial test indicator. If you need the best and are willing to pay for it, this is the tool for you. Invest in the L.S. Starrett 708az and experience the precision and quality that Starrett is known for.