INSIZE Digital Indicator with Transmission Button & Signal Light The INSIZE Series-2139 Digital Indicators with Transmission Button & Signal Light are Professional-grade digital indicators engineered for precision measurement applications. The rotatable 320° display accommodates various mounting orientations, while the 3/8" diameter stem with 4-48UNF threaded tip ensures secure installation in standard fixtures and holders. Advanced measurement capabilities include tolerance GO/NO GO display, maximum/minimum/range tracking, absolute and incremental modes, and instant inch/metric conversion. Data preset and measurement direction change functions streamline repetitive inspection tasks. Dual digital and analog display provides visual confirmation of readings. Transmission button with signal light enables seamless data transfer to external systems, reducing manual recording errors and improving workflow efficiency. Built for demanding shop environments where accuracy and reliability are non-negotiable. Select Measuring Range from Pulldown Menu. Specifications include... 0.0005" / 0.01mm Resolution Digital & Analog Display 3/8" Diameter Stem 4-48UNF Threaded Tip Display can be rotated 320° Functions Include... Tolerance GO and NO GO display Data preset Measurement direction change Maximum / minimum / range measurement inch/metric conversion Lug Back Absolute/incremental measurement