jĕngkal. The span between the extremity of the thumb and that of the middle finger, when held apart as widely as possible, and used as a measure of distance.
Wilkinson describes several interesting modifications of the word, only the last of which is explicity described as a measure:
jĕngkal tĕlunjok: the span between the extremities of the thumb and index finger.
jĕngkal kĕlengkeng and j. jari manis: the span between the extremities of the thumb and of the little finger, and finger next to it, respectively.
Sa-jĕngkal mĕnyisip ka-sa-bĕlah: the span between the tips of two adjoining fingers held as far apart as possible ; Sej. Mai. [Sejarah Melayn; Shellabear's edition (Arabic character), Singapore.], 18.
jĕngkal kĕtoḳ : a measure of length ; the span between the tip of the thumb and the central joint of the finger when the finger is bent for rapping.