Granite Try Square

Granite Try Square

The Essential Right-Angle Reference for Precision Fabrication&Inspection

Tool Definition&Functional Purpose

A Granite Try Square is a fundamental metrology instrument designed specifically for rapid,accurate verification of 90-degree angles in manufacturing,machining,and quality control applications.Featuring a precision-ground granite blade mounted perpendicular to a sturdy granite stock,this tool provides an absolute angular reference for checking perpendicularity of components,machine setups,and workpieces.Its unique granite construction offers superior stability and durability compared to traditional metal try squares,making it indispensable in environments where accuracy must withstand regular use.

Design Philosophy:Precision with Practicality

Material Advantages Over Metal Squares

Thermal Stability:Granite's low thermal expansion(5.5-6.5×10⁻⁶/°C)prevents dimensional changes in fluctuating workshop temperatures

Vibration Damping:Natural crystalline structure absorbs measurement vibrations,preventing"chatter"during inspection

Wear Resistance:Hard surface(6-7 Mohs)maintains edge sharpness longer than steel alternatives

Corrosion Immunity:No rust or oxidation,even in humid or coolant-rich environments

Ergonomic&Functional Design

Balanced Weight Distribution:Carefully calculated mass ensures stable,one-handed operation

Non-Slip Handling Surfaces:Sandblasted or rubberized grips on the stock for secure handling

Clear Visual References:High-contrast surfaces with optional measurement markings

Protective Features:Reinforced corners and edges prevent damage from incidental contact

Construction&Manufacturing Excellence

Monolithic Blade Construction

Single-Piece Granite Blade:Machined from solid granite stock without laminations or joints

Precision Ground Edges:Working edge ground to straightness within 0.005mm per 100mm

Parallel Sides:Blade sides parallel within 0.01mm across full length

Surface Finish:Lapped to 0.8-1.6µm Ra(32-63µin)for smooth,consistent contact

Stock Design&Blade Integration

Reinforced Stock:Extra mass at blade junction ensures long-term angular stability

Permanent Blade Mounting:Blade permanently fixed using epoxy granite composite for stress-free bonding

Square Reference Face:Stock face ground square to blade within tight tolerances

Optional Features:Integrated level vials,magnetic bases,or mounting provisions