K\u00e8o t\u00e0i x\u1ec9u trong b\u00f3ng \u0111\u00e1 l\u00e0 g\u00ec?<\/figcaption><\/figure>\nH\u1ec7 th\u1ed1ng k\u00e8o c\u00e1 \u0111\u1ed9 r\u1ea5t phong ph\u00fa, th\u01b0\u1eddng chia th\u00e0nh k\u00e8o ch\u00ednh v\u00e0 k\u00e8o ph\u1ee5. B\u00ean c\u1ea1nh k\u00e8o ch\u00e2u \u00c1 v\u00e0 ch\u00e2u \u00c2u th\u00ec soi k\u00e8o t\u00e0i x\u1ec9u c\u0169ng l\u00e0 k\u00e8o ch\u00ednh b\u1edfi n\u00f3 xu\u1ea5t hi\u1ec7n trong h\u1ea7u h\u1ebft c\u00e1c tr\u1eadn \u0111\u1ea5u. C\u00e1ch ch\u01a1i k\u00e8o t\u00e0i x\u1ec9u \u0111\u01a1n gi\u1ea3n: ng\u01b0\u1eddi ch\u01a1i d\u1ef1 \u0111o\u00e1n t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng trong tr\u1eadn \u0111\u1ea5u v\u00e0 \u0111\u1eb7t c\u01b0\u1ee3c v\u00e0o c\u1eeda t\u00e0i (n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng l\u1edbn h\u01a1n con s\u1ed1 nh\u00e0 c\u00e1i \u0111\u01b0a ra) ho\u1eb7c c\u1eeda x\u1ec9u (n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng nh\u1ecf h\u01a1n con s\u1ed1 nh\u00e0 c\u00e1i \u0111\u01b0a ra).<\/span><\/p>\n<\/span>C\u00e1ch soi k\u00e8o t\u00e0i x\u1ec9u chu\u1ea9n x\u00e1c trong c\u00e1 \u0111\u1ed9 b\u00f3ng \u0111\u00e1<\/b><\/span><\/h2>\nK\u00e8o t\u00e0i x\u1ec9u l\u00e0 m\u1ed9t lo\u1ea1i k\u00e8o ph\u1ed5 bi\u1ebfn m\u00e0 nh\u00e0 c\u00e1i s\u1ebd \u0111\u01b0a ra t\u1ef7 l\u1ec7 d\u1ef1 \u0111o\u00e1n v\u1ec1 t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng c\u1ee7a tr\u1eadn \u0111\u1ea5u. C\u00e1c t\u1ef7 l\u1ec7 n\u00e0y th\u01b0\u1eddng r\u1ea5t \u0111a d\u1ea1ng, sau \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e1ch<\/span> soi k\u00e8o t\u00e0i x\u1ec9u<\/b> ph\u1ed5 bi\u1ebfn:<\/span><\/p>\nK\u00e8o t\u00e0i x\u1ec9u 1.5 tr\u00e1i:<\/b> Th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng 1:1\/2 ho\u1eb7c 1.5, k\u00e8o n\u00e0y ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho t\u1eebng hi\u1ec7p \u0111\u1ea5u:<\/span><\/p>\n\n- C\u1eeda t\u00e0i th\u1eafng n\u1ebfu c\u00f3 t\u1eeb 2 b\u00e0n th\u1eafng tr\u1edf l\u00ean trong hi\u1ec7p \u0111\u1ea5u.<\/span><\/li>\n
- C\u1eeda x\u1ec9u th\u1eafng n\u1ebfu ch\u1ec9 c\u00f3 0 ho\u1eb7c 1 b\u00e0n th\u1eafng trong hi\u1ec7p \u0111\u1ea5u.<\/span><\/li>\n<\/ul>\n
K\u00e8o t\u00e0i x\u1ec9u 1.75 tr\u00e1i: <\/b>C\u00f2n \u0111\u01b0\u1ee3c ghi l\u00e0 1.75 ho\u1eb7c 1.5 \u2013 2. K\u00e8o n\u00e0y \u0111\u01b0\u1ee3c hi\u1ec3u nh\u01b0 sau:<\/span><\/p>\n\n- C\u1eeda t\u00e0i th\u1eafng n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng t\u1eeb 3 b\u00e0n tr\u1edf l\u00ean; \u0103n n\u1eeda ti\u1ec1n n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n l\u00e0 2.<\/span><\/li>\n
- C\u1eeda x\u1ec9u th\u1eafng n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng l\u00e0 1 ho\u1eb7c 0; thua n\u1eeda ti\u1ec1n n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n l\u00e0 2.<\/span><\/li>\n<\/ul>\n
C\u00e1ch \u0111\u1ecdc c\u00e1c k\u00e8o t\u00e0i x\u1ec9u ph\u1ed5 bi\u1ebfn hi\u1ec7n nay<\/figcaption><\/figure>\nK\u00e8o t\u00e0i x\u1ec9u 2 tr\u00e1i: <\/b>K\u00e8o n\u00e0y \u0111\u01b0\u1ee3c t\u00ednh nh\u01b0 sau:<\/span><\/p>\n\n- N\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng h\u01a1n 2 th\u00ec c\u1eeda t\u00e0i th\u1eafng.<\/span><\/li>\n
- C\u1eeda x\u1ec9u th\u1eafng n\u1ebfu soi k\u00e8o t\u00e0i x\u1ec9u <\/b>t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng \u00edt h\u01a1n 2 (1 ho\u1eb7c kh\u00f4ng c\u00f3 b\u00e0n th\u1eafng).<\/span><\/li>\n
- N\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng \u0111\u00fang b\u1eb1ng 2, c\u1ea3 hai c\u1eeda \u0111\u1ec1u ho\u00e0n ti\u1ec1n.<\/span><\/li>\n<\/ul>\n
K\u00e8o t\u00e0i x\u1ec9u 2.25 tr\u00e1i: <\/b>Th\u01b0\u1eddng ghi l\u00e0 2.25 ho\u1eb7c 2-2.5, k\u00e8o n\u00e0y c\u00f3 c\u00e1c t\u00ecnh hu\u1ed1ng sau:<\/span><\/p>\n\n- C\u1eeda t\u00e0i th\u1eafng n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng t\u1eeb 3 b\u00e0n tr\u1edf l\u00ean; thua n\u1eeda ti\u1ec1n n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n l\u00e0 2.<\/span><\/li>\n
- C\u1eeda x\u1ec9u th\u1eafng n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng \u00edt h\u01a1n 2; \u0103n n\u1eeda ti\u1ec1n n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n l\u00e0 2.<\/span><\/li>\n<\/ul>\n
K\u00e8o t\u00e0i x\u1ec9u 2.75 tr\u00e1i: <\/b>C\u00f2n \u0111\u01b0\u1ee3c ghi l\u00e0 2.75 ho\u1eb7c 2.5-3, \u0111\u01b0\u1ee3c hi\u1ec3u nh\u01b0 sau:<\/span><\/p>\n\n- C\u1eeda t\u00e0i th\u1eafng n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng l\u00e0 4 ho\u1eb7c nhi\u1ec1u h\u01a1n; \u0103n n\u1eeda ti\u1ec1n n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n l\u00e0 3.<\/span><\/li>\n
- C\u1eeda x\u1ec9u th\u1eafng n\u1ebfu\u00a0<\/b>t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng l\u00e0 2 ho\u1eb7c \u00edt h\u01a1n; thua n\u1eeda ti\u1ec1n n\u1ebfu t\u1ed5ng s\u1ed1 b\u00e0n l\u00e0 3.<\/span><\/li>\n<\/ul>\n
K\u00e8o t\u00e0i x\u1ec9u 3 tr\u00e1i: <\/b>C\u00e1ch <\/span>soi k\u00e8o t\u00e0i x\u1ec9u<\/b> n\u00e0y nh\u01b0 sau:<\/span><\/p>\n\n- N\u1ebfu t\u1ed5ng b\u00e0n th\u1eafng l\u1edbn h\u01a1n 3 th\u00ec c\u1eeda t\u00e0i th\u1eafng.<\/span><\/li>\n
- Tr\u01b0\u1eddng h\u1ee3p t\u1ed5ng s\u1ed1 b\u00e0n th\u1eafng nh\u1ecf h\u01a1n 3 th\u00ec c\u1eeda x\u1ec9u s\u1ebd th\u1eafng, ng\u01b0\u1ee3c l\u1ea1i n\u1ebfu t\u1ed5ng b\u00e0n th\u1eafng ch\u1ec9 c\u00f3 3 th\u00ec \u0111\u01b0\u1ee3c ho\u00e0n ti\u1ec1n c\u1ea3 2 c\u1eeda.<\/span><\/li>\n<\/ul>\n