Abstract: A heat dissipation apparatus (100) includes a fan bracket (20), a fan (10) and a heat sink (40). The fan bracket includes a housing (22), a support portion (242) extending from the housing, and a plurality of arm portions (244) extending from the housing in a direction opposite to the support portion. Each of the arm portions includes an engaging portion (244a) extending outwardly therefrom, engaging with a fastener (30) to mount the heat dissipation apparatus to a printed circuit board (50). At least two arm portions each include a hook (244c) extending inwardly therefrom. The fan is attached to the support portion of the fan bracket. The heat sink is held between the arm portions of the fan bracket with a bottom surface of the heat sink engaging with the hooks.

Abstract: A heat dissipation apparatus (100) includes a fan bracket (20), a fan (10) and a heat sink (40). The fan bracket includes a housing (22), a support portion (242) extending from the housing, and a plurality of arm portions (244) extending from the housing in a direction opposite to the support portion. Each of the arm portions includes an engaging portion (244a) extending outwardly therefrom, engaging with a fastener (30) to mount the heat dissipation apparatus to a printed circuit board (50). At least two arm portions each include a hook (244c) extending inwardly therefrom. The fan is attached to the support portion of the fan bracket. The heat sink is held between the arm portions of the fan bracket with a bottom surface of the heat sink engaging with the hooks.

Abstract: A tool for measuring depths of countersunk holes includes a worktable (1), a measuring member (30), and a display device (50). The worktable includes a measuring plate (10) defining four adjusting screw holes (17) in four comers thereof, and four adjusting rods (28) adjustably attached in the adjusting screw holes below the measuring plate. The adjusting rods are adjusted so that the measuring plate can be level. The measuring member is generally cylindrical, and includes a cylindrical head (32) having a conical tip (34). The display device includes a vertical central shaft (58), and a bearing sleeve (60) surrounding a bottom of the central shaft. The central shaft can move vertically through the bearing sleeve. The display device further includes a cylindrical body (52) having a display (54) showing a height value of a top face of the central shaft, and a zeroing button (56).

Abstract: A tool for measuring depths of countersunk holes includes a worktable (1), a measuring member (30), and a display device (50). The worktable includes a measuring plate (10) defining four adjusting screw holes (17) in four corners thereof, and four adjusting rods (28) adjustably attached in the adjusting screw holes below the measuring plate. The adjusting rods are adjusted so that the measuring plate can be level. The measuring member is generally cylindrical, and includes a cylindrical head (32) having a conical tip (34). The display device includes a vertical central shaft (58), and a bearing sleeve (60) surrounding a bottom of the central shaft. The central shaft can move vertically through the bearing sleeve. The display device further includes a cylindrical body (52) having a display (54) showing a height value of a top face of the central shaft, and a zeroing button (56).