Pembacaan skala lengan belakang = Pembacaan skala lengan tengah = Pembacaan skala lengan depan = Hasil Pengukuran Sesungguhnya =

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The question is asking for the readings of different scales on a measuring instrument and the actual measurement result. Each reading corresponds to a different part of the instrument, and the actual measurement is determined by considering these readings, possibly adjusting for any zero error inherent in the instrument. The process of obtaining these readings would typically involve visually inspecting the scales on the instrument and noting the value indicated by each scale. The actual measurement result is then calculated based on these readings, taking into account the design and functionality of the instrument.