Hand Refractometer - Brix Range 0-10% To 28-62%, Measurement Range 0-32% To 0-55% | Superior Quality Raw Materials, Precision Calibration

Countdown Timer - Premium Plastic, Maximum 99 Min 59 Sec | Foldable Stand, Magnetic Back, Battery Operated

Pocket Microscope - 30x Magnification , Built-in Illumination and Focusing Wheel for Detail Observation

Digital Potentiometer - 0 to 1999mV Range, 3.5 Digit LED Display, High Input Impedance | Ideal for Chemistry Labs and Pharmaceutical Industries

Stage Micrometer - Precision Ground Glass Slide 25mm x 75mm | Brightly Illuminated Grid Lines, 1mm Total Length Subdivided into 100 Divisions of 0.01mm Each

Nebulizer - 17cm x 14.5cm x 11.2cm, Lightweight Compact Design with Quiet Piston Compressor

Tuning Fork - High-Quality Alloy | Precision Frequency Tuning from 256 to 512 Hz

Directional Compass

Altimeter-Barometer-Weather Forecast Device - 0 to 5000m Altitude Range, 550 to 1000hPa Pressure Range | Versatile Dual-Dial Functionality, Accurate Atmospheric Measurement

Sound Level Meter - 30 to 130 dB Range, A & C Frequency Weighting, LCD Display, Lightweight ABS Housing, Hold Function, Dual Time Weighting Modes

pH Meter - Range 0.0 to 14.0 pH, Resolution 0.1 pH, Accurate to 0.1 pH at 20C, Lightweight 95g, Dimensions 175x41x23mm, Durable Battery Life of 700 Hours