The universal length instrument is applied for absolute and relative measurement.It features in high accuracy due to adopting Abbe comparative theory and a high precision measuring system.

• 万能测长仪是一种用于绝对测量和相对测量的长度计量仪器，应用了阿贝头比较原理和采用高精密的测量系统，因而具有较高的测量精度。