INSIZE Block Level 4903

In stock
SKU: 107546003
Regular price $165.00

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Technical Documents 

Product Data Sheet 

Product Description

INSIZE 4903-A Series Block Levels – Precision Instruments for Horizontal Surfaces and Shafts

The INSIZE 4903-A Series Block Levels offer precision measurement for horizontal surfaces and shafts. These well-designed, durable tools are suitable for various measuring ranges and provide accurate readings. 

Manufacturer's Code: 4903 Series

COO (Country of Origin): China

Products Specifications

  • V-Groove on Bottom: Equipped with a V-groove on the bottom designed for shafts with diameters ranging from 15mm to 70mm.

  • Transverse Vial: Includes a transverse vial for additional measurement capabilities, enhancing the versatility of the instrument.

  • Adjusting Wrench: Supplied with an adjusting wrench for convenient calibration and fine-tuning.

  • Durable Construction: Well-designed and durable, ensuring high precision in measuring horizontal surfaces of a wide range of equipment.

  • Easy to Use: The block levels are easy to use, making them ideal for checking horizontal surfaces and shafts efficiently.


  1. 4903-150A: 150mm Measuring Range
  2. 4903-200A: 200mm Measuring Range
  3. 4903-300A: 300mm Measuring Range

Choose the variant that suits your specific measurement requirements, and rely on the quality and precision that comes with INSIZE instruments. These block levels are indispensable tools for achieving accurate and reliable measurements in various applications.


At our store, we provide two shipping options to meet your needs. Our standard courier delivery ensures delivery within 2 days, offering an efficient and cost-effective choice.

For those requiring even faster service, we offer a same-day express delivery option for orders placed before 10 am and only to specified districts. We prioritize timely and reliable delivery to enhance your shopping experience.

Enjoy peace of mind with our 1-year warranty on spare parts and maintenance for all our products. In the event of a defect affecting the functionality of your purchase, we'll repair or replace the necessary parts. Please be aware that certain expenses may apply to the buyer, and we do not cover issues resulting from electrical fluctuations or voltage variations. For comprehensive details, you can expand and review our full Warranty Terms and Conditions in the customer help center.