Timescale/ˈtaɪmskeɪl/ Definition 1 of 2Pro Tip 1/3Project Planning Used to set deadlines and expectations in planning stages, indicating project duration. The construction has a timescale of two years. Pro Tip 2/3Specific Duration Often paired with a specific length of time for clarity. Our team's response to the inquiry will follow a one-week timescale. Pro Tip 3/3Completion Indicator Suggests when something should or will be completed. The software update will be rolled out on a monthly timescale.