DuctChecker vs Easy Reference Measure

To determine the size of the duct constant pressure method, static pressure regain method, total pressure method, velocity method. Generally uses constant pressure method. This constant pressure method is how to determine the duct dimensions using the same value per 1 m on all duct friction loss. Usually determined by flow diagrams or duct design for slide rules. You can easily determine the duct by using this program.

Measure real-world lengths directly from your photos—fast and simple! This app turns your smartphone into a powerful measuring tool. By including a reference object such as a ruler or a coin in your photo, you can instantly calculate the actual size of any object captured. Whether for research, DIY, or hobbies, this app makes measuring more accessible than ever. *Key Features Accurate length measurement from photos Use reference objects (rulers, coins, cards, etc.) to set the scale Zoom, pan, and reset gestures for precise control Double-tap to reset zoom and position Save and share annotated images with measurement results *How It Works Capture or Select a Photo Take a new photo with your camera or select one from your gallery. Make sure to include a reference object such as a ruler or a coin. Set Calibration Points Tap the start and end points of the reference object (e.g., the 0 cm and 10 cm marks of a ruler). Enter the real-world length between these two points to calibrate the scale. Measure the Object Tap the start and end points of the object you want to measure. The app instantly calculates and displays the actual length. Save and Share The measurement result is added as a clear annotation on the photo. Save the annotated image and share it via email, messaging apps, or social media. *Use Cases Check the size of pipes, screws, gaskets, etc. Measure materials and objects for DIY projects Document lengths for study and research Assist in laboratory, or experimental records Complex Shape Length Simple, intuitive, and reliable. With this app, your smartphone becomes a portable digital ruler—always ready when you need it.