Crystal Hardened & Ground Flanged Beam Tri Squares — AA-4401

A flanged beam try square is a precision measuring tool used in machining, metalworking, and quality control to check for and mark 90-degree angles. The flanged beam provides a stable base, making it ideal for use on flat surfaces and for accurately checking the squareness of components.

The Crystal AA-440 series try squares are made from a single piece of fully seasoned, fine quality steel for maximum durability and longevity in industrial environments.

Yes, all squares in the AA-440 series are fully hardened to 58 (±2) Rc and feature accurately lapped beams and blades for straightness and parallelism, ensuring the highest level of precision.

Crystal AA-440 try squares are manufactured to have accurate right angles on both the inside and outside, with lapped surfaces for straightness and parallelism. They are precision tools designed for industrial and workshop accuracy.

Absolutely. Their robust construction from hardened steel and the stable flanged beam design make them perfectly suited for heavy-duty machining, fabrication, and inspection tasks.

We offer a standard 1-year warranty against manufacturing defects on all Crystal measuring tools. Contact our customer support for any warranty claims or service.

Yes, we provide a GST invoice for every purchase. Please ensure you enter your correct GSTIN during checkout to claim input tax credit.

Yes, we deliver to all major cities and industrial areas across India. Your order will be dispatched promptly to your registered address.

The right size depends on the scale of your workpiece. Smaller squares like the 100x70mm are for intricate work, while larger ones like the 300x200mm are for bigger components and machine setup. Choose a size that comfortably covers the dimensions you need to check.

A flanged beam try square has a wide base (the flange) that allows it to stand upright on a surface plate without support, which is crucial for certain layout and inspection tasks. A regular try square has a thinner, non-flanged beam.

The AA-4401 is ideal for toolmakers, model makers, and machinists working on smaller, high-precision components where a compact and accurate square is needed for setup and inspection.

The versatile 150x100mm size of the AA-4402 makes it a great general-purpose square for most small to medium-sized workshops, suitable for a wide range of fabrication and quality control tasks.

The AA-4403 is recommended for medium-scale fabrication shops and for setting up and checking smaller machinery where a longer reference edge is required for accuracy.

The large AA-4404 model is best suited for heavy fabrication, machine setup, and quality inspection of large components where maximum stability and a long, true reference edge are critical.

The primary difference is size. The AA-4401 has a beam length of 100x70mm, making it more compact for small-scale work. The AA-4402 is larger at 150x100mm, offering more versatility for general workshop applications.

The AA-4404 (300x200mm) is significantly larger than the AA-4403 (200x130mm). The AA-4404 is designed for large-scale industrial work, such as checking large fabrications or machine tool alignment, while the AA-4403 is better for medium-sized tasks.

For a typical workshop, the AA-4402 (150x100mm) often provides the best balance of size, usability, and price. It's large enough for most common tasks without being cumbersome, making it a versatile and cost-effective choice.