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On LS251D Hardness Test Machine Precise Leeb Hardness Tester Portable Hardness Tester for Steel

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  • Shipping Timeframes: All orders are processed within 2-5 business days (excluding weekends and holidays). After your order has been processed, the estimated delivery time is before 25 Dec, 2025, depending on customs, Please note that due to high demand, some items may experience longer shipping times, which will be communicated at order confirmation email.
  • Order Processing Time: Please allow 2-5 business days for us to process your order before it is shipped . Orders placed after 16:00 on Fridays, or during weekends and public holidays, will begin processing on the next business day. Processing times may be extended during peak seasons or sales events.
  • Manufacturing Time: Some products needs manufacturing time, the manufacturing process will take approximately 10-30 business days depending on the product. This timeframe may vary depending on the complexity of the product and current demand. but this will be communicated with you during order confirmation.
  • Returns and Exchanges: We offer a 30-day return policy for most items. If you are not completely satisfied with your purchase, you may return it within 30 days of receipt for a refund or exchange. Items must be unused, in their original packaging, and accompanied by proof of purchase. Return shipping costs are the responsibility of the customer, unless the item was damaged or defective upon arrival.
1. What is the primary use of the On LS251D Hardness Test Machine?

The On LS251D Hardness Test Machine is designed for precise hardness testing specifically for steel, making it ideal for industrial quality control, metal fabrication, and field testing.

2. What hardness scales does the LS251D support?

The LS251D supports various hardness scales including HL, HV, HB, HS, HRA, HRB, and HRC.

3. How accurate is the hardness measurement with this tester?

The LS251D offers an accuracy of ±12 HL and a typical accuracy of ±6 HL.

4. What is the weight of the On LS251D Hardness Tester?

The LS251D weighs 247 grams, making it lightweight and portable.

5. What type of power supply does the LS251D use?

The LS251D is powered by 2 AA alkaline dry batteries.

6. What are the dimensions of the LS251D hardness tester?

The host size of the LS251D is 142*72*28 mm, and the probe size is 148*31*25 mm.

7. How easy is it to operate the LS251D?

The LS251D features simple controls and a user-friendly design, making it easy to operate for both professionals and beginners.

8. What is the warranty period for the LS251D?

The On LS251D Hardness Test Machine comes with a 1-year warranty.

9. Can the LS251D be used for field testing?

Yes, the portable design of the LS251D makes it perfect for field testing of steel components.

10. What materials can be tested with the LS251D?

The LS251D is specifically designed for testing steel hardness but can also be used on various metal alloys.

11. What is the repeatability of measurements with the LS251D?

The repeatability of the LS251D is 6 HL, ensuring consistent results during testing.

12. Is the LS251D durable for long-term use?

Yes, the LS251D is made from durable plastic material designed for long-lasting use in various environments.

13. What is the resolution of the hardness readings?

The LS251D has a resolution of 1 HL, allowing for detailed measurement readings.

14. What industries can benefit from using the LS251D?

Industries such as manufacturing, quality control, material research and development, and maintenance inspections can greatly benefit from using the LS251D.

15. Is calibration required for the LS251D hardness tester?

It is recommended to periodically check the calibration of the LS251D for optimal accuracy, especially if used frequently.

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