This is a Digimatic Universal Protractor with data output that offers you the following features: 

• It has an easy-to-read digital display.
• It automatically turns off after 10 minutes, and gives you fixed reference points for easy adjustment.
• You can slide and clamp the measuring blade over the entire length.
• You can make fine adjustments to precisely adjust arbitrary angle dimensions.
• It comes with a mounting facility on height gauges and tracers of series 192 via holder.