TWM333999U - An adjustable torque wrench - Google Patents

Description

M333999, eight, new description: [New technical field] In particular, this creation is related to an adjustable torque wrench structure (1) An innovative type of designer to improve the torque value adjustment accuracy structure [previous technology] Press 'Please Figure 1 shows a conventional torque wrench. It is required to have an elastic body j 4" by means of a main rod (丄〇A). The elastic body (1" has one end opposite to the top and the main rod (...) The outer edge of the front end is formed with: ^ ( 1 1 A ), which is used to provide the inner screw of the screw-rod (3 〇A), the genu (3 1 a ), and the sleeve (3) 0 A ) " internal thread section u ? A), w edge car made (3 2 A) of which the internal thread section (3 2 A) is 6 can be screwed-linked (3 3 A) Externally threaded zone & ( 3 g A ), and the front end of the sleeve (3 〇a ) is secured by a limit member (4 〇A): the guide screw is tightened to thereby position the rod sleeve (3〇 " interlocking the linkage 3 3 A ) - the body guide screw movement displacement, and the linkage member (3 3 a ) is screwed with a - limit device (50 A), the limit device (5 〇A) One end extends - The external thread has a limiting portion (5 2 A ), and the guiding member (2 〇A ) is provided with a female screw: a limit hole (3 7 A ) relative to the limiting device (5 〇A ), The limit position (5 2 A ) of the limiting device (5 〇A ) can be displaced to the limiting hole (37A) of the guiding member (2 〇A), and the axial position of the other connecting member (33A) is predetermined. There is a fixed pin (5 4 A ) through which the fixed pin (5 4 A ) is forced into the phase of the guide member a) by the advancement of the guide screw of only 1 (50 A). Kind of non-textured section (3 cost. 2. The rod sleeve is made by the rod main rod (1 〇 diameter system is a large torque wrench), how to develop an ardent hope 0 is contrary to the design experience Have a M333999 for the position of the embedded card, push the im to enter the limit of the sleeve (30 A) helmet, the gentleman / function. ",, the method continues to guide the thread to adjust the unique structure of this type In the actual situation, the following problems are solved: In the test, it is found that there is still a rod sleeve of the structure of the torque wrench of the zhizhi π gong 1 3 0 A) continuation of the internal thread segment of the size pattern ο A ^ ^ again ( 31Α) and inside B)) The heart of the work is inconvenient and raises its bamboo

(30A) with the main rod (1〇A (ο 〇. Λ ) relative guide thread, d UA ) internal thread segment (] A, + & 1 A ) guide thread color A) outside the thread segment ( 1 1 A ) Bu), due to the size pattern of the above two paths, the accuracy of the torque of the threaded Cogo is adjusted.乂进市 The problem of the above-mentioned conventional torque wrenches

More /, the innovative six-female y ± structure, the use of the elimination of I, is also related to the industry must work hard to develop, I can break the goal and 2, the creator has been engaged for many years, ##+ !<,+, ? The production house of σσ ^ ^ dry sighs and prudently evaluates the use of K. [New content] That is, the main purpose of this creation is to connect with Μ ( _ \ 仏 仏 仏 仏 仏 仏 仏 仏 仏 , , , , , , , , , , , , , , , , , , , , , , , , , , , , The edge car system has two different specifications and sizes. The whole body of the car snail is placed in the hand of the hand. 6 M333999 is in the process of processing the inconvenience. The threaded section and the internal thread section are used to make a breakthrough. And its technical features to solve the problem, an internal thread section; 纟 系 由 由 由 由 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端 一端The internal screw ' y 旰爹 旰爹 的 processing # t A >, 作业 operating costs, compared to the prior art, can achieve the practical progress of the process savings. The other purpose of this creation is for the existing rod The relative guiding screw structure of the sleeve and the main rod is displaced by the threaded section of the main shaft in the rod sleeve/, and the threaded section of the main thread is in the outer thread section of the main rod. Dimensional shape to make the thread pitch larger and affect the risk The adjustment of the torsional moment of the noon is another problem--the problem is that the adjustment portion of the smaller outer diameter type is formed by extending one end of the linkage member and the outer edge of the adjustment portion is provided with an external thread bite segment, and The center of the guide block is provided with another technical feature of screwing the internal thread segment of the externally threaded section, so that the pitch of the thread providing the screw displacement of the present invention is smaller, which can greatly improve the adjustment precision of the torque value. To achieve the quality: the practical progress of the evening. [Embodiment] Please refer to the second to fourth figures, which is a preferred embodiment of the adjustable torsion wrench structure (-), but these embodiments are for illustrative purposes only. The use of the application is not limited by this structure. It includes: a main rod (10) and an elastic body (i 4 ), the inside of which is formed with an accommodation space (worker),丄丄) End 7 M333999 -. A drive end (6 Ο ) is pivoted by a pivot (6 1 ), wherein the end of the drive end (60) is provided with a side portion (6 2 ) and a sliding portion (6 3), the side portion (6 2 ) and the sliding portion (63) are connected to each other by a pressing block _ (70) (1 5) a side end (1 8 ) and a sliding end (1 9 ), and the other end of the connecting member (15) is formed with a stopper (16) for the elastic body (1 4 ) is placed in the accommodating space (1 1 ) and relatively blocked in the gear portion (16), and the main rod (10) is provided with upper and lower perforations radially outwardly. (1 3 ) φ , the perforation (1 3 ) is permeable to the positioning pin (1 2 ); a guiding member (20) and a guiding block (25), wherein the guiding member (20) is a cylinder In a state, and relatively accommodated in a circular accommodating space (1 1 ) of the main rod (10), the guide member (20) and the guide block (25) are directly guided to the main rod. In the accommodating space (1 1 ) of (10), and the end portion of the driving member (20) opposite to the driving end (60) is formed with a top end for supporting the elastic elastic body (14) (2 2 ), and the guide member (20) is internally provided with upper and lower hollow guide grooves (2 1 ), and the guide groove (2 1 ) provides a straight guide sliding capacity to receive a guide block (2 5 ) And a positioning hole corresponding to the positioning pin (1 2 ) of the main rod (1 ' 0 ) is disposed on the upper and lower radial edges of the outer edge of the guide block (25) (2) 7), wherein each positioning hole - (27) provides a positioning pin (1 2 ) of the main rod (10) to be positioned after being inserted into each other, and the center of the guiding block (25) is tapped inside a threaded section (2 6 ), another connecting end of the guiding member (20) is provided with a coupling hole (23), and the other end of the guiding member (20) is disposed with respect to the other end surface of the coupling hole (2 3 ) a fixing groove (2 4 ); a rod sleeve (30) and a linking member (33), wherein the rod sleeve (3 8 M333999 '〇) is sleeved and rotated on the main rod (1 〇), and the rod sleeve (3 ο) The outer edge is formed with a rotating surface (31), the rotating surface (31) can be held by hand and rotated 'and the sleeve (3 〇) is formed with an internal thread section (3 2 ) Threaded to the threaded section (3 9) outside the linkage (3 3 ) 'When the sleeve (30) is screwed to the linkage (33), the internal thread section can be borrowed again" The limit # ( 4 〇) is screwed; the linkage (3 3 ) is so that the sleeve (3 〇) and the linkage (3 ” are fixed to each other's other limit # ( 4 〇) A hole portion (42) is provided for providing a limiting device (50) for wearing, and another connecting member 3 3) The inner inner edge is provided with a joint portion (3 6 2 ), and the outer edge of the linkage member (3 3 ) corresponds to the joint 胄 (3 6 2 ), and the joint pin hole is radially disposed (to:) The whole part (3 4 ) is integrally threaded with external threads.

Γ/'joining section: 36) * limiting part (3", wherein the part of the knot "again (3 6) provides a combination of the grouping of the linkage # (3 3 ) 6 2 ), and the adjustment section (3) 4) The position of σ D is provided with a grip hole (361 hole) holding the pre- (3 6 1 ), and the joint hole (3 R η, the total slave direction corresponds to the linking member fqq, 6 1 ) is a fastener (3) 3) The combined pin hole (3 6 is traversed by a joint pin (〇3) '俾Q364) radially through the joint pin hole (3 β 3 ). The knot of d 3 ) is such that the linking member (33) and the adjusting portion (34) are ^361), and the adjusting portion (g body connecting pattern <3 4 ) is outside the thread segment (3 5 ) of the guiding block ( 2 5 ), 傀 敕Λ, 敕Λ 系 恰 相对 相对 相对 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整 调整(3 4 &amp; 3 6 ) The system is flat, the code, the , , and the splicing section ( (7) surface to facilitate pivoting to the guide coupling hole (2 3 ), and (4) whole # equal moving parts (2 〇) and the entire edge of the β a circumference (2 •) has an outer edge of 9 M333999 -· has an external thread, and the other end face of the linkage (3 3 ) has a second pin hole at a predetermined position 3 8 ) ; , mouth and 7 position device (5 〇), which includes a knob (5 丄), two solid pins (5 4 ) and a gasket (5 3 ), wherein the knob (5 丄) The central end of the crucible is provided with a limiting hole (52), and the inner edge of the limiting hole (52) is formed with a thread which is screwed to the adjusting portion (3 4) t (3 7 J) And the two fixing pins (5 4 ) are threaded through the linking member (3;), the hole (3 8 ), to be adjusted (3 4 ) The limit part (3 teeth not - 塾 piece (5 3 ), the second fixed pin (

Stop at the front end of the spacer f GI 5 3 ), with the rotary knob (eight limit hole (5 2 ) guide screw in front of the limit (3 7), 隹 5 ', make the fixed lock (w) break into In the limit 4's fixed tank (24, gentry 1 dry < 〇 〇) fixed 4), in order to make the rod sleeve (30) swirling function, the submerged Bu is given to the rod sleeve Μ η, 疋 功 匕 匕Dead, but can not ^ screw the torsion to adjust the function state. _ #The above structure, composition design, here is the use of the 4 毹 situation of the creation of the following 1 · · - Do not use the user to adjust the torque wrench to twist the pole cover (q η 夺, 诒First, hold the 〇 〇 〇 旋 , , , , , , , , , q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q e ^ / ° Λ linkage (3 3 ) rotator Q 2 5 ) is radially fixed to the guide (2 〇) guide, the main cup (1 〇) inner edge 'guide block (2 5) , let the guide (2 = then the inner wall surface is attached to the forward, backward, etc. &amp;# ^ only % relative guide block (2 5) 4 η, move, and make the sleeve (3 0, 4 〇) And linkages (3 qi m ^ 〈 3 〇), constraining parts ( , d 3 ) and other components, 蕤i # soil adjustment part (3 4 9 by the linkage (3 3 ) 4 ) V screw the guide block (2 5 ) and integrated forward movement 10 M333999 • The side edge of the t4 linkage (3 3 ) is the thrust guide (2 〇 forward movement, and the joint section (36) of the adjustment part (34) Cooperating with the coupling hole (23) that is idling to the guide member (20) The top end (2 2 ) of the guide member 2 顶) pushes the elastic body (1 4 ) to be compressed, and the elastic body (1 4 ) is additionally erected, and the pressure is released. The connecting piece, when driving the torque wrench Q b U ), when the driving torque exceeds the twisting force set by the wrench, the driving end (6 〇 by the pivot (6 1 ) H), 〇U) is 1) square 且 and the tampering block (7 0 ) is changed, so that the two side contact positions are set by the original side end (!_ 8 ) and the side part (6 2 ) jumps to the slip surface end (1 q, is the ^ part (6 3), to inform the use, the torque is out of range; otherwise, to reduce the torque of the torque wrench 'The arm sleeve (3 〇) needs to be rotated by hand to reverse the displacement, so that the rod sleeve ((J ί: piece (3 3) is guided by the adjustment part (3 4) to guide the thread block Q 2 5 ) ρ, 、, (2 6 ) is a retreating action, and the elasticity 1 4 ) is elastically stretched, and is opposite to the top end (2 2 ) of the top support guide (2 〇) to reduce the torque The torque value of the wrench. Fixed rod set (q Q彳夕力 A Α田先调旋 (5&quot;, the limit of the limit hole (52) of the adjustment part (34) (51) n1 1 , d 4 ) The part (3 7 ) leads the screw forward, and the J-spearing of the adjusting part (34) advances 5 4), and then you press the fixed slot 吏T fixed lock (54) of the two fixed pins (〇) The guide member (2 in the guide block (... and the U-turn member (20) is radially limited and cannot be rotated, and the linkage is limited together (qq,

And the 椁 set (3 Ω, # ^ ^ 〇 〇 J dry U) red turn status. Please continue to participate in the introduction of Chu = brother 5, which is the first embodiment of the creation, 11 M333999 'the pole cover (3 Ο (Β), and the main standard is not zone (B) corresponding to facilitate the use • Please refer to section 6, the sleeve (3 0 ) 3 6 3 ) position setting) and the linkage ( _ and the external thread section (please continue to refer to the example, where the adjustment is integrated, with the section (3 5 7 ) ) The knob (5 1 7 B ) on the other end is extended [Effective Description] The creation effect • ' 1 , ie, this. Wrench structure (1) Inside the wrench structure Thread segment and internal improvement breakthrough; sleeve (30)-end) one end outer edge can be the diameter of the cup (1 0) relative to the engraved stroke marking area (the unit diagram of the identification of the torque value, the system This creation can be used in the corresponding linkage (there is a combination of perforation (3 2 1 3 3) and no additional attack 3 9), and it is not necessary to use the reading of Figures 7 and 8. The whole part (3 4 B ) can be The fact that the linkage (3 3 B ) and the coupling section (3 6b) limit hole (3 7 β ), B) are relative to the linkage (3 limit section (5 2 B )) is as follows: The system has a two-threaded section on the inner edge of the sleeve, and the technique for solving the problem is only to provide an internal thread section (toward the engraved area) The precision of the sleeve (30) is determined by the combination of the pin holes (C) of the second embodiment of the second embodiment, wherein 3 3) is used to make the sleeve (3 internal thread section (3 2 ) limiter ( 4 0 ) The third real and interlocking part of the creation (3 3 B ) has an external screw and a linkage (3 3 B and the limit device ( 5 0 B 3 B ) The position of the hole (3 in the provision of an adjustable torque point) is a feature of the inconvenience of the different types of bear processing for the conventional torsion type, mainly by the rod 3 2), by which the innovative 12 talents are set (3 0) It is only necessary to save more than one unnecessary processing work piece process. The purpose is to use the internal thread of the rod sleeve to describe that the outer diameter of the rod is larger and thus affect the torque pull point. By interlocking The entire (3 4 ) segment (3 5 ), and the external thread segment (3 5 ), so that the creation of the guide screw torque value adjustment accuracy, the display is to specify the line description, when not Those who are in the technical field should make changes and modifications to be covered in M333999 as described later. Special design makes this creation (32), in order to reduce the prior art, it can reach 2, the other of this creation. The opposite guide thread of the rod is screwed out of the threaded section of the mast. Because of the precision of the thread pitch of the thread, another problem is that a smaller outer diameter type is attached. 3 4) The outer edge is provided with an external screw tapping Another technical feature of the relative screwing, the smaller the distance, can greatly improve the practical progress of the improvement. The above embodiments are disclosed by the specific terminology; the spirit and principle are familiar with this. Special changes and modifications, the defined scope is transferred. ‘Create an internal thread section. “This expenditure is compared with the first step. 1 existing rod sleeve and 'section guide screw displacement at one end of the main large diameter dimension type hand torque adjustment (3 3 ) and the adjustment portion (block (2 5) central internal thread section (2 6 displacement The thread of the tooth advances to achieve the quality of the creation, and the text defines this new creation can understand the purpose of this creation to the equivalent, the patent application scope 13 M333999

[Simple description of the drawing] Fig. 1 is a schematic cross-sectional view of a conventional torque wrench structure. Fig. 2 is an exploded perspective view of the torque wrench of the present invention. Fig. 3 is a sectional view of the combination of the torque wrench of the present invention. The action diagram of the torque wrench is shown in the figure. It shows the state of use of the rotary knob. Figure 5: The appearance of the first embodiment of the present invention. Figure 6 • The outline of the creation of the present embodiment. 7 Fig.•• is a three-dimensional exploded view of the first embodiment of the present invention. Fig. 8 is a schematic sectional view of the first embodiment of the present invention. [Main component symbol description] Conventional part: Main rod (10 A , ) external thread Segment ( 1 1 A ) Elastomer (1 4 A ) Guide ( 2 0 A ) Rod ( 3 0 A ) Internal thread section ( 3 1 A ) Internal thread section ( 3 2 A ) Moving parts ( 3 3 A ) Limiting holes (3 7 A ) External thread section ( 3 9 A ) Limiting parts (4 0 A ) Limiting device ( 5 0 A ) Limiting part ( 5 2 A ) Fixing pin (5 4 A ) This part of the creation • Main rod ( 10 ) accommodating space ( 1 1 ) Locating pin (1 2 ) Perforation ( 1 3 ) Elastomer (1 4 ) Connector ( 1 5 ) 14 M333999 'Retaining part (1 6 ) Side end (1 8 ) * Guide (2 0 ) Top end (2 2 ) - Fixing groove (2 4 ) _ Internal thread section (2 6 ) Rod sleeve (3 0 ) Internal thread section (3 2 ) • Adjustment section (3 4 ) Bonding section (3 6 ) Bonding hole (3 6 1 ) Bonding pin hole (3 6 3 ) Pin hole (3 8 ) Limiting piece (4 0 ) Hole part (4 2 Limiting device (5 0 ) 9 Limiting hole (5 2 ) Fixing pin (5 4 ) 'Drive end (6 0 ) • Side (6 2 ). Force block (7 0 ) Stroke mark area (A ) Linkage (3 3 B ) External thread section (3 5 B ) Limit hole (3 77 B ) Top support (1 7 ) Slip end (1 9 ) Guide groove (2 1 ) Bonding hole (2 3 ) Block (2 5 ) positioning hole (2 7 ) rotating surface (3 1) Linkage (3 3 ) External thread section (3 5 ) Limiting part (3 7 ) Joint part (3 6 2 ) Union pin (3 6 4 ) Externally threaded section (3 9 ) Internal thread section (4 1) Knob (5 1 ) Shim (5 3 ) Shaft (6 1 ) Sliding part (6 3 ) Accuracy marking area (B) Adjustment part (3 4 B ) Bonding section (3 6 B ) Pin hole (3 8 B ) 15 M333999 - Male thread section (3 9 B ) Limiting device (5 Ο B ) Knob (5 1 B ) Limiting part (5 2 B )

16

Claims (1)

M333999 IX. Patent application scope: 1. An adjustable torque wrench structure (1), comprising: a main rod and an elastic body, the main rod is internally formed with a receiving space, and the end of the receiving space is provided with a blocking portion for flexibility The body is placed in the accommodating space and is opposite to the blocking portion, and the outer edge of one end of the main rod is radially disposed with a positioning pin; a guiding member and a guiding block, the guiding member is disposed on the main portion The accommodating space of the rod, one end of the guiding member is formed to block the top end of the elastic body, and the guide member is internally provided with a guiding groove for receiving the guiding and sliding guide block, wherein the outer edge of the guiding block a positioning hole corresponding to the positioning pin of the main rod is disposed at a radial position, so that the positioning pin of the main rod is inserted into the positioning hole of the guide block to be positioned with each other, and the center of the guide block is provided with an internal thread segment, and the guide is The other end of the moving member is provided with a coupling hole, and the other end surface of the guiding member is provided with a plurality of fixing grooves; the other end of the rod is provided with a screw portion outside the connecting portion, and the adjusting sleeve, the linking member and the adjusting portion are provided Relatively fixed one linkage member provides a fixing adjustment portion, a segment, and an external thread segment adjacent to each other Forwarding the binding portion of the guide member movable other end is provided with the stopper portion, it is provided with a limit within a limited portion of the screw pin and is fixed state by the movable guide member. The positional device includes a hole, and the limiting hole forms a pattern, and the fixed pin system is correspondingly blocked in the knob, the fixing groove, the rod sleeve and the rod sleeve, and the adjustment portion forms a hole, The other part of the limit knob has a relative guide insertion and a fixed lock, and the inner part of the end of the rotary part is formed with a joint section and a fixed pin is provided on the other edge, and the screw is connected to the front end of the linkage fixed pin. The pre-action sleeve is overlaid on the ΐ joint portion, and is screwed to the guide shaft, wherein the joint end is provided with a pin hole external thread; wherein the pin hole of the limit member of the knob member is convexly set to be a function of the rotation 17 M333999 ' 2. According to the structure of the patent application scope (1), the adjustable torque of the JL rb 1 member can be borrowed from the position of the pole sleeve relative to the screw wrench. - limited food, the next day, the Ministry, in order to broadcast each other in a fixed state, and the limit member dry "linking device is a limit device to be worn in conjunction with the linkage. It has a hole to facilitate the 3, according to Patent application scope (1), in which Qiao Wei, brother 1 The adjustable torque wrench indicating area described in the item, and the main rod: = the outer edge can be radially engraved with the precision marking area, and the ":= the precision marking area of the rod sleeve is engraved with the stroke position size.吏 辨 辨 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 The solid grouping method can be further provided with a -bonding pin...::: in the hole, and the linking member is located in the coupling and the locking body is inserted through the interlocking portion, and then by the pinhole and the pin hole and The adjusting hole of the adjusting part is a type of adjustable torque wrench structure (1), comprising: an elastic body, the main part of the main rod is formed with a accommodating space, and the accommodating space is arranged for two days.令一士日抖# u ^ The dance body is placed in the accommodating space and is relatively opposite to the damper, and the outer edge of one end of the force &amp; king cup is radially provided with a locating pin, a guiding member And guiding _ ^ ^, the guiding member 1 shape # = guiding member is placed in the accommodating space of the main rod ^ is useful to block the top end of the elastic body, and the inside of the guiding member is provided with a guide The groove, the radial position of the edge is provided with a sliding-guide block for the valley, wherein the locating hole of the locating pin of the main sill is outside the guide block, and is provided for the main rod of 18 M333999 The pin guide center is provided with the other end of the inner part _ inner edge phase - the outer screw of the adjustment section is rotated. The hole and the pin hole are extended to have one hole outside, and the fixed protrusion is positioned in the moving function. ♦Structure (―) The positional parts are screwed to each other. The positional device is worn. 7. The structure (-) is not zoned, and the zone is not known. The position of the seat is then positioned to each other and the other end is provided with a fixing groove. The sleeve is covered with the moving member, and the linking member is provided with a coupling section hole at a suitable position, and the inner edge of the linking member is formed with a knob and the fixing portion is formed with a corresponding screw-like guiding insertion setting On the side, in the repetitive order, the pair of rods described in item 5 is screwed to the opposite end of the linkage so that the other end of the rod is formed. The outer edge of one of the outer ends of the fifth item may be a precision indicator of the diameter of the rod sleeve to facilitate the user to insert the threaded section of the positioning hole of the guide block, and the guide surface cloth is provided with a plurality of sleeves and linkage members, and the rod pair is screwed and fixed. a connecting portion, the adjusting portion is shaped, and the adjusting portion is combined with the guiding member, wherein the limiting hole position device is a binding portion, the limiting thread, and one end of the fixing pin is broadcasted to the guiding The state of the fixed slot of the moving piece. According to the patent application model, wherein the pole sleeve phase is pressed against the phase state of the pole sleeve, and the limit position is combined with the linkage of the 4 cow according to the patent application specification, wherein the relative pole of the pole sleeve is oppositely calibrated by the two And the guide hole is combined with the hole, and the main rod is guided, and the other end of the rod sleeve extends relative to the guide block and extends into the internal thread of the guide block. The other end of the joint portion is provided with a limit pattern; the pin, wherein the knob When the end of the pin hole fixing pin of the linking member is locked and cannot be given to the rotary adjustable torque wrench knot, the eye piece sleeve and the linking member can be used for the boring portion to facilitate the adjustment of the adjustable torque wrench. A precision 楳 area is engraved with a line that identifies the torque value of the line 19