Metric Set
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 Snap on Blue Point 13 pc Socket Set METRIC 1 4 Dr $29.99 Time Remaining: 1h 1m Buy It Now for only: $39.99 |
 Kamasa 55982 Metric Spanner Set 20 Pieces $65.17 Time Remaining: 6d 21h 35m Buy It Now for only: $65.17 |
 Draper Expert 79365 10 Piece Titanium Nitride Coated Metric Drill Set $37.86 Time Remaining: 26d 15h 51m Buy It Now for only: $37.86 |
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 Draper DIY Series 13704 13 Piece Metric Drill Set $13.11 Time Remaining: 6d 21h 4m Buy It Now for only: $13.11 |
 Stanley Hex Key Triangle Set Metric $14.57 Time Remaining: 4d 23h 1m Buy It Now for only: $14.57 |
 Stanley Socket set 15PC Metric 1 4Sqdr 0 86 775 $39.43 Time Remaining: 5d 9h 39m Buy It Now for only: $39.43 |
 UST Nuts Bolts 350 pc Metric Set W5222 $9.99 Time Remaining: 16d 6h 9m Buy It Now for only: $9.99 |
 300 piece E Clip Assortment Tool Kit Set Variety SAE Metric Universal $17.99 Time Remaining: 22d 9h 23m Buy It Now for only: $17.99 |
 NEW CHROME 189 PC SAE METRIC TOOL SOCKET WRENCH SET $99.99 Time Remaining: 18d 8h 14m Buy It Now for only: $99.99 |
 Draper 79198 5 Piece Metric Hexagon Die Nut Set $32.29 Time Remaining: 6d 13h 1m Buy It Now for only: $32.29 |
 Draper 79200 10 Piece Metric Hand Tap Set $31.43 Time Remaining: 6d 22h 37m Buy It Now for only: $31.43 |
 Draper Hi Torq 29545 11 Piece Metric Combination Spanner Set $32.26 Time Remaining: 10d 9h 56m Buy It Now for only: $32.26 |
 Metric M10 T Nuts for Sofa Legs Set of 6 $7.95 Time Remaining: 18d 6h 56m Buy It Now for only: $7.95 |
 Silverline 598447 7 Piece 1 2 Inch Drive Metric Socket Set $18.17 Time Remaining: 6d 14h 11m Buy It Now for only: $18.17 |
 Draper 26697 4 Hi Torq Combination Spanner Sets 2 Metric and 2 Imperial $111.05 Time Remaining: 4d 23h 7m Buy It Now for only: $111.05 |
 Silverline 244975 8 Piece 1 4 Inch Drive Metric Socket Set $13.83 Time Remaining: 6d 14h 9m Buy It Now for only: $13.83 |
 Draper 30766 6Pc Metric Combination Spanner Set $14.29 Time Remaining: 29d 7h 43m Buy It Now for only: $14.29 |
 Metric M8 T Nuts for Sofa Legs Set of 6 $7.95 Time Remaining: 13d 9h 53m Buy It Now for only: $7.95 |
 Draper 73182 3 8 inch Square Drive Set of Deep Metric Sockets $29.51 Time Remaining: 5d 8h 35m Buy It Now for only: $29.51 |
 Snap on Blue Point 13 pc Socket Set METRIC 1 4 Dr $19.99 Time Remaining: 12h 39m Buy It Now for only: $29.99 |
 Faithfull Metric Tap and Die Set Carbon Steel 39 Pieces $64.60 Time Remaining: 26d 17h 17m Buy It Now for only: $64.60 |
 Draper 46609 Metric Dial Gauge Set $156.19 Time Remaining: 4d 23h 46m Buy It Now for only: $156.19 |
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 Silverline 589709 6 Piece Metric Box Double Ended Spanners Set $12.09 Time Remaining: 26d 14h Buy It Now for only: $12.09 |
 Bahco CMSET12 Combination Spanner Set 12Metric S20 SH12 $137.71 Time Remaining: 6d 10h 52m Buy It Now for only: $137.71 |
 Draper 79205 75 Piece Metric and BSP Combination Tap and Die Set $210.82 Time Remaining: 4d 23h 46m Buy It Now for only: $210.82 |
 Draper 29547 14Pc Draper hi torq metric comb wrench set $110.40 Time Remaining: 4d 23h 7m Buy It Now for only: $110.40 |
 Bahco CMSET10 Combination Spanner Set 10 Metric BS20 S10 $154.89 Time Remaining: 6d 10h 54m Buy It Now for only: $154.89 |
 Draper 43695 Expert Metric Hss Twist Drill Set 19 Pieces $40.49 Time Remaining: 26d 14h 31m Buy It Now for only: $40.49 |
 Draper 41686 1 2 inch Square Drive Hi Torq Metric Impact Socket Set 4 Pieces $19.46 Time Remaining: 10d 11h 6m Buy It Now for only: $19.46 |
 Regent Products Metric Folding Deluxe Hex Key Set 8 assorted sizes $2.25 Time Remaining: 14d 10h 49m Buy It Now for only: $2.25 |
 Draper 45458 20 Blade 04 7 mm TPI Metric Screwpitch Gauge Set $11.11 Time Remaining: 7d 7h 45m Buy It Now for only: $11.11 |
 Silverline 719784 10 Piece Expert Quality Metric Hex Key Set $15.37 Time Remaining: 6d 14h 5m Buy It Now for only: $15.37 |
 Silverline 571532 8 Piece Metric Box Spanner Set $14.29 Time Remaining: 5d 6h 48m Buy It Now for only: $14.29 |
 Britool E069253B 2 10mm Short Arm Metric Hex Key Set 10 Pieces $15.29 Time Remaining: 5d 8h 50m Buy It Now for only: $15.29 |
 Draper 02372 20 Piece 1 4 Inch Square Drive Silverdrive Metric Socket Set $47.00 Time Remaining: 26d 16h 28m Buy It Now for only: $47.00 |
 Draper DIY Series 19622 11 Piece Metric Combination Spanner Set $23.17 Time Remaining: 6d 21h 14m Buy It Now for only: $23.17 |
 Wera 073596 Hex Key Set 9pc Ballpoint Metric Black $45.23 Time Remaining: 5d 6h 53m Buy It Now for only: $45.23 |
 Faithfull HKSF8m Folding Hex Key Set Metric 8 Pieces $20.57 Time Remaining: 10d 9h 29m Buy It Now for only: $20.57 |
 Snap On Blue Point 10pc Wrench Set METRIC $29.99 (1 Bid) Time Remaining: 12h 50m |
 Britool E032900B 1 2 inch Metric Socket Drive Set 22 Pieces $131.45 Time Remaining: 14d 7h 58m Buy It Now for only: $131.45 |
 Draper 35089 5 Piece Cranked Metric Ring Wrench Set $18.80 Time Remaining: 26d 16h 32m Buy It Now for only: $18.80 |
 Faithfull HKSF8MB Folding Hexagon Key Set Ball End Metric 8 Pieces $27.57 Time Remaining: 6d 11h 19m Buy It Now for only: $27.57 |
 Draper 14023 Metric Imperial Hexagon Key Set Wallet 25pc $20.46 Time Remaining: 26d 16h 33m Buy It Now for only: $20.46 |
 Wera 073597 Hex Key Set Ballpoint Metric 9 Pieces $56.46 Time Remaining: 21d 7h 2m Buy It Now for only: $56.46 |
 Draper Expert 79366 21 Piece Metric HSS Titanium Nitride Twist Drill Set $93.97 Time Remaining: 5d 7h 58m Buy It Now for only: $93.97 |
 Draper Expert 78673 16 Piece 13 mm Metric Vortex Gear Ratchet Socket Set $58.09 Time Remaining: 6d 15h 37m Buy It Now for only: $58.09 |
 Draper 31134 14 Piece Combined Metric AF Hexagon Key Set $16.94 Time Remaining: 5d 9h 4m Buy It Now for only: $16.94 |
 Bahco CMSET6 Combination Spanner Set 6 Metric S20 SH6 $66.31 Time Remaining: 6d 10h 52m Buy It Now for only: $66.31 |
 Silverline 675084 9 Piece 3 8 Inch Drive Metric Socket Set $16.83 Time Remaining: 6d 14h 9m Buy It Now for only: $16.83 |
 Draper 29595 10 Piece Metric Ball End Hexagon Key Set $24.14 Time Remaining: 26d 16h 32m Buy It Now for only: $24.14 |
 Draper 19756 10pc Metric Combination Mini Spanner Set $24.00 Time Remaining: 10d 9h 56m Buy It Now for only: $24.00 |
 Draper 02352 Expert 3 8 inch Square Drive Metric Socket Set 33 Pieces $108.00 Time Remaining: 4d 22h 33m Buy It Now for only: $108.00 |
 Draper 79201 10 Piece Metric Tap and Die Set $47.75 Time Remaining: 26d 15h 14m Buy It Now for only: $47.75 |
 Draper Expert 33611 Metric Chrome Vanadium Socket Set 20pc 1 4 Drive $54.37 Time Remaining: 26d 16h 32m Buy It Now for only: $54.37 |
 Draper 66438 7 piece metric long hexagon key set $17.43 Time Remaining: 5d 8h 57m Buy It Now for only: $17.43 |
 Avit AV07020 Metric Combination Spanner Set 7 16mm 10 Pieces $29.09 Time Remaining: 26d 17h 13m Buy It Now for only: $29.09 |
 Draper Expert 43698 6 Piece Metric SDS Plus Masonry Drill Set $36.57 Time Remaining: 6d 11h 23m Buy It Now for only: $36.57 |
 Stanley 469261 Folding Hex Key Set Metric 7 Pieces $17.63 Time Remaining: 6d 10h 50m Buy It Now for only: $17.63 |
 Snap on Blue Point 13 pc Socket Set METRIC 1 4 Dr $19.99 Time Remaining: 14h 28m Buy It Now for only: $29.99 |
 Draper Expert 12197 7 Piece Metric Hexagon Bit Set and Holder $19.40 Time Remaining: 5d 9h 9m Buy It Now for only: $19.40 |
 NEW INDUSTRIAL GRIP ON TAP DIE SET 45 PC METRIC $64.99 Time Remaining: 4d 11h 19m Buy It Now for only: $64.99 |
 Blue Spot 8 Piece Flexible Head Metric Ratchet Spanner Set $125.94 Time Remaining: 26d 12h 58m Buy It Now for only: $125.94 |
 Draper 34151 9 Piece Satin Chrome Metric Combination Spanner Set $50.83 Time Remaining: 26d 16h 59m Buy It Now for only: $50.83 |
 Draper 10094 18 Blade Metric Imperial Feeler Gauge Set $10.09 Time Remaining: 5d 8h 29m Buy It Now for only: $10.09 |
 Stanley Open End Spanner set 8PC Metric 4 87 052 $61.17 Time Remaining: 26d 16h 38m Buy It Now for only: $61.17 |
 Stanley 494648 Fatmax Combination Spanner Set Metric 13 Pieces $116.04 Time Remaining: 26d 19h 14m Buy It Now for only: $116.04 |
 Faithfull Hex Key set 9 Metric Long Arm $19.86 Time Remaining: 5d 9h 25m Buy It Now for only: $19.86 |
 NEW INGERSOLL RAND 3 8 8 PC METRIC AIR IMPACT SOCKET SET $24.99 Time Remaining: 4d 8h 32m Buy It Now for only: $24.99 |
 8 Piece Metric Midget Open End Spanner Set $21.74 Time Remaining: 5d 9h 6m Buy It Now for only: $21.74 |
 Draper 19511 12 Piece Metric AF Combination Wrench Set $21.66 Time Remaining: 5d 9h 6m Buy It Now for only: $21.66 |
 Draper 40857 7 Piece Metric Hexagon Key Set Colours May Vary $25.09 Time Remaining: 6d 13h Buy It Now for only: $25.09 |
 FAMEX Tools 590 SD 40 47 Piece High Class Socket Set Metric 1 4 Inch Drive $73.57 Time Remaining: 6d 15h 11m Buy It Now for only: $73.57 |
 Draper 27511 Hi Torq Metric Combination Spanner Set 8 Pieces $27.83 Time Remaining: 6d 17h 28m Buy It Now for only: $27.83 |
 Draper 08377 8 Piece Metric Hexagon Key Set $26.11 Time Remaining: 6d 23h 36m Buy It Now for only: $26.11 |
 Stanley 469262 Folding Hex Key Set Metric 7 Pieces $24.00 Time Remaining: 6d 10h 50m Buy It Now for only: $24.00 |
 Draper 08380 Metric 9 Piece Ball End Hex Key Set $24.29 Time Remaining: 12d 9h 19m Buy It Now for only: $24.29 |
 Draper 12837 7 Piece Metric Hex Bit Set and Holder $29.14 Time Remaining: 5d 9h 8m Buy It Now for only: $29.14 |
 Draper 30751 23 Piece 1 2 Inch Drive Metric Hi Torq Socket Set $81.86 Time Remaining: 4d 23h 7m Buy It Now for only: $81.86 |
 Snap on Blue Point 13 pc Socket Set METRIC 1 4 Dr $29.99 Time Remaining: 1d 16h 28m Buy It Now for only: $39.99 |
 Draper 79197 6 Piece Circular Metric Die and Holder Set $40.03 Time Remaining: 6d 13h 3m Buy It Now for only: $40.03 |
 Stanley 494646 Fatmax Combination Spanner Set Metric 6 Pieces $35.86 Time Remaining: 7d 8h 31m Buy It Now for only: $35.86 |
 Faithfull Hex Key set 9 Metric Long Arm Ballend $28.71 Time Remaining: 5d 9h 25m Buy It Now for only: $28.71 |
 Draper 13035 1 4 inch Drive Metric Socket Set $19.00 Time Remaining: 5d 8h 29m Buy It Now for only: $19.00 |
 Blue Spot 8 Piece Soft Grip Metric Spanner Set $36.11 Time Remaining: 6d 13h 50m Buy It Now for only: $36.11 |
 FAMEX 13485 31 31 Piece Spanner Set Metric $87.98 Time Remaining: 4d 22h 40m Buy It Now for only: $87.98 |
 Draper Expert 64605 12 Piece Metric Combination Spanner Set $54.14 Time Remaining: 5d 8h 58m Buy It Now for only: $54.14 |
 Draper 35383 10 Piece Metric T Handle Hexagon Key Set $53.54 Time Remaining: 5d 9h 3m Buy It Now for only: $53.54 |
 Faithfull HKS12MLB Hex Key Set Metric Long Arm Ball Ended 12 Pieces $34.83 Time Remaining: 4d 10h 20m Buy It Now for only: $34.83 |
 Faithfull SOC3822M Socket Set 3 8 inch Sq Drive Metric 22 Pieces $101.68 Time Remaining: 4d 9h 32m Buy It Now for only: $101.68 |
 Draper 71592 Metric Combination Spanner Set In Insert Tray 12 Pieces $57.80 Time Remaining: 4d 23h 3m Buy It Now for only: $57.80 |
 Britool E113947B 15 10mm Long Arm Metric Hex Key Set 9 Pieces $35.43 Time Remaining: 6d 11h 57m Buy It Now for only: $35.43 |
 Stanley 089904 Hex Grip Key Set Metric 9 Pieces $43.54 Time Remaining: 6d 10h 52m Buy It Now for only: $43.54 |
 CK 4343M Combination Spanner Metric Set 12 Pieces $110.40 Time Remaining: 6d 18h 17m Buy It Now for only: $110.40 |
 Silverline 196513 7 Piece 1 2 Inch Drive Deep Metric Socket Set $40.11 Time Remaining: 6d 13h 59m Buy It Now for only: $40.11 |
 Draper 43696 Expert Metric Hss Twist Drill Set 25 Pieces $79.03 Time Remaining: 21d 7h 6m Buy It Now for only: $79.03 |
 Draper 43697 Expert Metric Hss Twist Drill Set 29 Pieces $56.43 Time Remaining: 6d 11h 23m Buy It Now for only: $56.43 |
 Faithfull Metric Tap and Die Set in Carbon Steel 21 Pieces $43.71 Time Remaining: 5d 10h 4m Buy It Now for only: $43.71 |
 Draper 15269 3 8 Inch Square Drive Metric Socket Set $305.00 Time Remaining: 5d 8h 28m Buy It Now for only: $305.00 |
Metric Set
Current software metrics and models technology
Size metrics begin with Halstead's volume, now measured in source lines of code (SLOC), and add structure as the number of unconditional branches of control loop nesting and module fan-in and fan-out. The newly added rework attributes describe the size of additions, deletions, and changes made between versions. Combined, they measure the turmoil in the developing product. The authors have also added a new measure of code functionality smaller than the program or module, called a chunk. It is a single integral piece of code, such as a function, subroutine, script, macro, procedure, object, or method. Volume measures are now made on functionally distinct chunks, rather than larger-scale aggregates such as programs or components. Tools are provided that allow the designer to aggregate chunks into larger units and even predict the number of function points or object points. Furthermore, because most software products are not developed from scratch but rather reuse existing code chunks with known quality characteristics, the toolkit allows the prediction of equivalent volume using one of four different algorithms (or all four, if desired) taken from recent software science literature. A new volume measure called unique SLOC has been added. It evaluates new LOC on a per-chunk basis and can calculate unique SLOC for a developing version of the product.
Naturally, volume measures are the major input for effort metrics. Recent research adds five categories of 17 different dominators, which can have serious effort-magnifying effects. The categories into which dominators fall are project, product, organization, suppliers, and customers. For example, potential dominators in the product category include the amount of documentation needed, programming language, complexity, and type of application. In the organization category, they include the number of people, communications, and personnel turnover. Customer includes user interface complexity and requirements volatility, which are negative, but then the dominators are all basically negative. Their name signifies that their presence may have an effort-expansion effect as large as a factor of 10. But when their influence is favorable, they generally have a much smaller positive effect. A range of effort prediction and cost forecasting algorithms based on a variety of theoretical, historical/experiential, statistical, and even composite models are provided.
The third measure category is development time, which is derived from effort, which is derived from size or volume. The only independent new variable here is schedule. Given the resources available to the project manager, the toolkit calculates overall minimum development time and then allows the user to vary or reallocate resources to do more tasks in parallel. However, the system very realistically warns of cost runaways if the user tries to reduce development time by more than 15% of the forecast minimum.
Because effort is essentially volume divided by productivity, you can see that productivity is inversely related to effort. A new set of cost drivers enters as independent variables, unfortunately having mostly negative influences. When cost drivers begin to vary significantly from nominal values, you should take action to bring them back into acceptable ranges. A productivity forecast provides the natural objective function with which to do this.
The quality metrics advocated in Simmons, et al. are dependent on the last three metric sets: reliability, verification, and usability. Usability is a product's fitness for use. This metric depends on the product's intended features, their verified functionality, and their reliability in use. Simply stated, this metric means that all promises were fulfilled, no negative consequences were encountered, and the customer was delighted. This deceptively simple trio masks evaluation of multiple subjective psychometric evaluations plus a few performancebased factors such as learnability, relearnability, and efficiency. Much has been written about measures of these factors. To sell software, vendors develop and add more features. New features contain unique SLOCs, and new code means new opportunities to introduce bugs. As might be expected, a large measure of customer dissatisfaction is the result of new features that don't work, whether due to actual defects or merely user expectations. The only thing in the world increasing faster than computer performance is end-user expectations: A product whose features cannot be validated, or that is delivered late or at a higher-than-expected price, has a quality problem. Feature validation demands that features be clearly described without possible misunderstanding and that metrics for their measurement be identified.
The last point in the quality triangle is reliability, which may be defined as defect potential, defect removal efficiency, and delivered defects. The largest opportunity for software defects to occur is in the interfaces between modules, programs, and components, and with databases. Although the number of interfaces in an application is proportional to the program's size, it varies by application type, programming language, style, and many other factors. One estimate indicates that 70% or more of software reliability problems are in interfaces. Aside from the occurrence of errors or defects, and their number (if any), the major metric for quality is the mean time between their occurrence. Whether you record time to failure, time intervals between failures, cumulative failures in a given time period, or failures experienced in a given time interval, the basic metric of reliability is time.
About the Author
nandita choudhery,
mtech final year
kurukshetra university
kurukshetra
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