Which tool is more easily used by a right handed person, than by a left handed?

screwdriver
hand saw
electric drill
hammer
The reason for the clockwise orientation of most screws and bolts is that supination of the arm, which is used by a right-handed person to turn a screw clockwise, is generally stronger than pronation; while screwing is generally done more often than unscrewing.
Betty
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Answers by country

screwdriver
hand saw
electric drill
hammer
answers
flagGreece
77%
11%
11%
0%
18
flagAustria
70%
5%
17%
5%
17
flagRepublic of Ireland
66%
8%
16%
8%
12
flagRussia
61%
11%
14%
10%
85
flagPakistan
60%
20%
4%
12%
25
flagNigeria
58%
16%
0%
25%
12
flagGermany
54%
11%
13%
15%
44
flagCanada
53%
16%
9%
11%
43
flagBelarus
51%
11%
22%
11%
27
flagIndia
50%
18%
13%
15%
245
flagPoland
48%
15%
17%
16%
13455
flagthe United States
48%
21%
11%
16%
483
flagUkraine
48%
18%
16%
15%
148
flagthe United Kingdom
48%
20%
17%
12%
139
flagUnknown
48%
20%
17%
13%
29
flagthe Philippines
37%
27%
16%
18%
43
flagAustralia
35%
16%
22%
25%
48
flagMalaysia
33%
33%
13%
20%
15
flagKazakhstan
29%
29%
23%
17%
17
flagFrance
27%
36%
18%
18%
11