Digital Force Gauge SM-20N/100N/500N | High Precision Push Pull Tester with 5 Interchangeable Heads & Extension Rod | 4 Units & 3 Modes for Industry & DIY

Headline: Precise Control Over Every Push and Pull—A Professional Force Measurement Tool with Excellent Value
Sub-headline: Economical Digital Push-Pull Force Gauge (SM-20N / SM-500N) | ±0.5% High Accuracy | 3 Modes | 4 Units | Smart Power-Saving

Bullet Points:

🎯 High-Precision Sensor: Smart chip ensures smooth operation without lag; ±0.5% measurement accuracy for peace of mind and reliability.

🔄 Seamless Mode Switching: Easily switch between Real-Time Mode, Peak Mode, and Peak Hold Mode with a single button.

📏 Four Units at Your Fingertips: N (Newtons), kg (kilograms), lb (pounds), and oz (ounces) to accommodate different measurement preferences.

⚙️ Includes 5 types of alloy probes: flat, pointed, flat-blade, V-shaped, and hook-shaped, plus an 8 cm extension rod, suitable for various complex scenarios.

💡 User-Friendly Design: 180° flip display, automatic backlight in dark environments, and automatic shutdown after 10 minutes of inactivity.

📊 Precise Specifications (Specifications - Parameter Table)
Specifications: SM-20N (Economy Edition)    SM-500N (Advanced Edition)
Maximum Range:    20 N (approx. 2 kg)    500N (approx. 50 kg)
Resolution:    0.01N    0.1N
Measurement Accuracy:    ±0.5%    ±0.5%
Screen Shielding Value:    5%    5%
Units:    N / kg / lb / oz    N / kg / lb / oz
Power Supply:    2 AAA batteries    2 AAA batteries
Display:    LCD digital display + automatic backlight    LCD digital display + automatic backlight
🔍 In-Depth Analysis of Product Details (Deep Dive Features)
1. Smart Three-Mode System to Meet Different Testing Needs
Real-time Mode: The screen does not display “PEAK” or “ST”; it provides real-time feedback on the current force value, making it suitable for dynamic monitoring.
Peak Mode: The screen displays “PEAK” and automatically records the maximum force value (upper limit) during the measurement process.
Peak Hold: The screen displays “PEAK” and “ST,” locking the value so it remains unchanged, making it convenient for recording and review.

2. Complete Set of Professional Accessories—Ready to Use Right Out of the Box
5 Types of High-Strength Alloy Test Heads:
Flat Test Head: Suitable for compression testing of soft materials such as rubber, foam, and sponge.
Pointed/Hollow Test Head: Suitable for inner wall friction, step load-bearing, and point contact testing.
Flat-Blade Test Head: Suitable for sheet material hardness and button pressure testing.
V-shaped tip: Suitable for pull-out force testing on irregularly shaped components such as tubes, wires, and edges.
Hook-shaped tip: Suitable for gravity, pull-out force, and tensile strength testing.
Extension rod (+8 cm): Easily handles measurements in deep holes or hard-to-reach areas.

3. User-Friendly Smart Experience
180° Display Rotation: Press and hold the “Switch” button for about 5 seconds to rotate the display, allowing for effortless viewing from multiple angles.
Auto Backlight: The screen automatically illuminates in dark environments, making nighttime or low-light operations more convenient.
Energy-Saving: Automatically powers off after 10 minutes of inactivity to extend battery life.
Long Battery Life: Requires only 2 AA batteries, which are quick and easy to replace.

🛠️ Wide Range of Applications (Application Scenarios)
Whether you’re in factory quality control, laboratory R&D, or doing everyday DIY repairs, this force gauge will be your reliable assistant:
Industrial Manufacturing: Insertion and extraction force testing of electronic components, pull-out force testing of wire harness terminals, and peel force testing of packaging seals.
Materials Science: Tensile and compressive strength testing of rubber and plastics; adhesive bond strength testing.
Everyday DIY: Smoothness testing of door and window hardware; fishing line tensile strength testing; mechanical spring compression testing.

❓ Frequently Asked Questions
Q1: What are the maximum tensile and compressive forces this push-pull force gauge can measure?
A: We offer two models. The SM-20N can measure up to 20 N (approximately 2 kg), while the SM-500N can measure up to 500 N (approximately 50 kg). Please select the appropriate measurement range based on your actual testing needs.

Q2: Why isn’t the number on the screen changing?
A: Please check if “ST” is displayed in the upper-left corner of the screen. If “ST” is displayed, it means the device is currently in peak hold mode. You can press the “Settings” button briefly to switch back to real-time mode.

Q3: How do I replace the batteries?
A: The battery compartment cover on the back of the push-pull force gauge slides open easily; simply insert two AAA batteries.

Q4: Is measurement accuracy affected by the environment?
A: To ensure high accuracy of ±0.5%, we recommend using the device at room temperature and in an environment free from severe vibrations. Please perform a “Zero (ZERO)” calibration before each use.

📦 Package Contents (What's in the Box)
1 x Digital Push-Pull Gauge Main Unit (SM-20N or SM-500N)
5 x High-Strength Alloy Probes (Flat, Pointed, Flat-Blade, V-Blade, Hook)
1 x Extension Rod (8 cm)
1 x User Manual