https://apryse.com/cad-sdk/measure
广告The most compliant rendering engine perfected at apryse over the last 20 years. Measure distance, trace a perimeter or calculate the area in CAD, PDF or 30+ file types.
Supports 30+ file formats · Fully supported library · Top rated PDF SDK
Types: Viewing, Annotation & Collabration, Redaction, Document Generation