Depth Symbol

Indicates the depth of a hole, slot, counterbore, or similar feature.

↧

12.0

The depth symbol identifies a measurement from the outer surface of a part to the bottom limit of a feature.

For drilled holes, depth is typically measured to the deepest location where full diameter is achieved, not to the drill point tip.

Use it with blind holes, slots, counterbores, and similar recesses.

Clarify whether the depth is full-diameter depth when the feature bottom includes a cone or tool point.

Depth Symbol Drawing Use

Depth Symbol is read with the adjacent dimension, note, or feature control frame so inspection uses the intended feature definition.

\u25cb

0.04

This symbol defines or modifies a size, shape, or manufacturing dimension rather than creating a GD&T tolerance zone by itself.

Read the symbol with the attached dimension, note, or feature control frame before evaluating the feature.

Verify the controlled feature using the drawing's stated limits, datum setup, and any special notes tied to the symbol.

A drawing includes the Depth Symbol symbol with a related feature requirement.

Identify

↧

Recognize the Depth Symbol symbol and the feature it modifies.

Read

Adjacent value

Use the attached dimension, note, or frame cells as the controlling requirement.

Inspect

Per drawing

Measure the named feature using the specified interpretation rather than assuming a generic size check.

Depth Symbol clarifies how the feature is defined so the drawing and inspection method stay aligned.

Item	Controls	Typical Placement
Depth Symbol	Dimension interpretation	Next to a dimension, note, or frame
GD&T control	Geometric variation	Feature control frame
Datum reference	Measurement setup	Datum feature or frame cell

This page is part of the drawing-symbol reference set rather than a standalone geometric tolerance category.

When the symbol modifies a feature control frame, read it together with the tolerance value and datum references.