The tank was an established unit of measurement of length sometimes used to measure a person's height. According to his wanted hologram, Hondo Ohnaka was 1.9 tanks tall. When measured in meters, Ohnaka's height was 1.85, suggesting that one tank was slightly shorter than one meter. According to the wanted hologram for the Rebel Sabine Wren, Sabine was 1.7 tanks tall; however, when measured in meters, Wren's height was still the same.