about the 3d model -3d model dimension is accurate to a real world dimesion, -3d model is a single part model -3d mdoel dosnt have any internal parts.
A Phi ruler, also known as a Golden Ratio ruler or Fibonacci ruler, is a tool designed to assist in creating or measuring objects using the Golden Ratio or Phi (φ). The Golden Ratio, often denoted by the Greek letter φ (phi), is approximately equal to 1.61803398875. It is a mathematical ratio that is commonly found in nature, art, and architecture, and is believed to result in aesthetically pleasing proportions.
A Phi ruler typically has markings and proportions based on the Golden Ratio. By using this ruler, artists, designers, and architects can incorporate the Golden Ratio into their creations. The ruler helps in dividing lengths into two parts such that the ratio of the whole length to the longer part is the same as the ratio of the longer part to the shorter part, which equals the Golden Ratio.
Using a Phi ruler can assist in achieving visually harmonious compositions, as the Golden Ratio is often associated with beauty and balance. Artists and designers use it as a guide to create aesthetically pleasing layouts, proportions, and designs.