This portable mini measuring tape keychain measures approximately 1.5". The mini measuring tape key chain can measure up to 1m (3 feet). It shows both inches and cm. This small measuring tape is very portable and can be used as a key chain. The small mini measuring tape keychain has a lock to hold the measuring tape in place and springs back automatically when unlocked. The mini measuring tape key chain also has a rubber casing to protect it. The measuring tape keychain comes in assorted colors such as yellow, orange, blue, etc. One will be chosen randomly.