A1 Quality Instruments

Insize Tension Gauge by AQI model ISF TG10 by A1 Quality Instruments
The gauge can be used for both clockwise and counter-clockwise measurements. 
Preparation: Hold the gauge by its main body. Ensure the small metal probe is clean and free from debris.
Contact the Object: Gently press the probe tip against the object you are measuring (e.g., a spring or relay contact).
Apply Force at a Right Angle: Apply force slowly and steadily, ensuring the probe remains at a right angle (90 degrees) to the object's surface. This is critical for accurate readings; applying force at an angle will result in measurement errors.
Read the Measurement:
Peak Reading: Continue applying force until the maximum point is reached or the desired action (e.g., a relay clicking) occurs. The main needle on the dial will move and indicate the tension value.
Tracking Mode: For continuous measurement, simply read the current tension directly from the dial as you apply force.
Release and Note: Release the pressure and note the measurement value indicated by the needle. 
Key Specifications for ISF-TG10
Range: 1 to 10 gf (grams-force)
Graduation: 0.2 gf
Accuracy: ±2% (full scale)
Dimensions: 90 x 47 x 19 mm
Weight: 60 g