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Young African-American QA engineer working with laptop and mobile phone in office at night

Multifunctional voltage tester with digital display, phase indication, and non-contact voltage detection. On a white background in insulation

A technician operates a fiber optic tester, showcasing intricate measurement techniques for network diagnostics and performance evaluation in a professional setting.

A technician analyzes a fiber optic tester during installation, showcasing cables and tools used in network communication for effective signal verification.

A woman uses perfume testers and sprays the fragrance from the bottle.

Close-up of a hand holding a car battery tester with orange buttons. The background shows a blurred car battery in a garage setting.

Pool water test kit with ph and chlorine color chart beside white tablets on pool edge. Blue water in background

Electrician Testing Electrical Panel with Digital Insulation Resistance Tester Showing 500M Ohms Reading - Safety Inspection, Periodic Maintenance and Facility Management Concept

Digital multimeter with wires, tool for battery voltage checking

Businessman data analysis for performance and quality assurance, testing methods, process validation, defect detection, compliance checks, standard monitoring, and continuous improvement

The scene captures a surface roughness measuring machine (profilometer) as its tactile stylus traverses the metal surface to quantify microscopic irregularities

Professional car mechanic using a digital battery tester to inspect vehicle performance during routine maintenance. Automotive technician performing diagnostics under the hood in a repair shop.

Red Circuit Tester isolated on white background

Swimming pool water tester set on wooden table with space on clear pool water background, quality water tester, pool service and maintenance industry

Electric engineer calibrete earth clamp tester with calibration sheet before testing.

Auto mechanic using AC Manifold gauges tester checking and examining air condition pressure and leak for car in repair service

Blonde woman enjoying the scent of a perfume tester in a beauty shop, carefully selecting a fragrance for herself from a diverse array of products on the shelves

transparent glass perfume samples testers bottles with black caps on white background top view, space for text. mockup.

transparent glass perfume samples testers bottles

Banner unknown car mechanic using battery tester checking accumulator battery in auto repair shop

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