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2-Handtachometer: A handtachometer was used to measure the rotation
speed in three ranges. First range: 40 – 500 rpm., second range: 400 –
5000 rpm., and third range: 4000 – 50000 rpm direct reading, with
accuracy of ± 1% .
3-Electronic balance: An electronic balance (Japan make) was used for
weighing samples in each category. Its scale ranged from 0 to 5 kg max.,
with accuracy of 0.2 g.
4-Spring balance: A spring balance was used for weighing the chopped
materials of rice and corn. It had a range up to 75 kg max. and 0.5 kg
accuracy.
5-Stop watch: for measuring the net time spent during cutting.
6-Surveyor tape 30 meters: for measuring the length of crops.
7-Sliding caliper : for measuring the cut length of crops
8-Oven: to determine the moisture content of crops under test.
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