📐 Sine Plate & Compound Setup

Calculate gage block stacks for sine bars and sine plates. Supports DMS input and compound angle setups.

Simple Sine Bar Setup

Angle (decimal degrees)

— or — DMS (° ' ")

Compound Angle Setup

For a workpiece tilted in two directions simultaneously. Enter the two component angles.

Angle X (°)

Angle Y (°)

Sine bar formula: Stack = L × sin(angle), where L = sine bar length
Compound angle: tan(true) = √(tan²(X) + tan²(Y))
Rotation: φ = atan(tan(Y) / tan(X))

Why Sine Plate Setup Matters

Sine plates and sine bars set precise angles for grinding, inspection, and machining compound angles. The gage block stack height determines the angle — and because sine is non-linear, you can't just eyeball it. You need the exact stack for your target angle.

Stack height = sine(angle) x center distance — standard sine plates come in 5-inch and 10-inch center distances
Compound sine plates tilt on two axes simultaneously for complex angles found in aerospace and mold work
Gage block combinations must be built from available blocks in your set — this calculator finds the optimal stack from standard sets

📐 Sine Plate & Compound Setup

Why Sine Plate Setup Matters

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