1、建築物高度與鍾麵尺（chǐ）寸對應關係
| 樓（lóu）高 | 10m | 20m | 25m | 30m | 35m | 40m | 50m | 60m |
| 鍾麵 | 1.0-1.5m | 1.8-2.2m | 2.2-3.0m | 2.6-3.2m | 3.2-3.8m | 3.6-4.2m | 4.8-5.5m |
5.8-6.5m |
2、模擬時鍾鍾麵尺寸與可視距離對應關係
| 鍾麵 | 280mm | 300mm | 400mm | 500mm | 600mm | 800mm | 900mm | 1200mm |
| 視距 | 8m | 12m | 25m | 40m | 50m | 65m | 100m |
150m |
3、數字時鍾數字高度與可視（shì）距離（lí）對應關（guān）係
| 字高 | 60mm | 100mm | 140mm | 190mm | 250mm |
| 視距 | 20m | 40m | 50m | 65m |
80m |
