Brush Instruments 21-1420-00 Clevite Surface Gage System Indicator

The Brush Instruments 21-1420-00 Clevite Surface Gage System is a precision surface measurement and vibration analysis instrument designed for laboratory and industrial testing applications. It is part of the Clevite/Brush line of transducer and measurement systems used for evaluating surface motion, displacement, or vibration amplitude in machinery and materials. Model: 21-1420-00 Type: Clevite Brush Surface Gage System (Surf Indicator) Function: Measures surface displacement, vibration, or deflection on mechanical and structural components Measurement Principle: Contact mechanical probe connected to an electromechanical pickup for displacement sensing Sensitivity: Typically 1 mV per micron (varies with probe tip and amplifier configuration) Range: ±1 mm to ±5 mm depending on tip and preamp used Frequency Response: DC to 10 kHz (typical for vibration or motion detection applications) Probe Type: Interchangeable contact tips with adjustable lever and locking screw mechanism Adjustment Mechanism: Micrometer-style fine adjustment with tension control Output: Analog voltage signal proportional to displacement Connector Type: Standard coaxial output to amplifier or recorder (BNC interface, rear-mounted) Mounting: Magnetic or clamp base with interchangeable metal probes and fork adapters Construction Material: Aluminum housing with precision-machined stainless probe components Accessories: Multiple probe forks, contact arms, and adjustment brackets included Power Source: External amplifier or conditioning unit (not self-powered) Operating Temperature: 0°C to +50°C Storage Temperature: -20°C to +70°C Dimensions: Approx. 160 mm × 80 mm × 45 mm (6.3 in × 3.1 in × 1.8 in) Weight: Approx. 600 g (with accessories) Application: Surface vibration measurement, displacement testing, modal analysis, and machine diagnostics Manufacturer: Brush Instruments / Clevite Division Country of Manufacture: USA Please review pictures carefully and let us know if you have any questions!