Air Duct Calculator. Equal Friction Method. Duct Sizing.

VERSATILE PRACTICE TOOL Ideal for guitarists at any skill level, the Sliding Ruler for Guitar is the ultimate All-in-One scale practice companion. Comes with easy-to-follow instructions.. VISUAL LEARNING AID Features vibrant, color-coded shapes to effortlessly learn and visualize the five positions of the pentatonic scale and their interconnections.. BEGINNER FRIENDLY Quickly master your first pentatonic scale and showcase your skills to friends with this intuitive learning tool.. ADVANCED PLAYER BENEFITS Expand your repertoire with comprehensive fretboard coverage for practicing pentatonic, blues, diatonic scales, and all seven modes in any key. Unlock new chord combinations with clear scale degree visibility.. SATISFACTION GUARANTEED Confident in the value of our product, we offer a hassle-free refund guarantee if youre not completely satisfied..

3D Template Ruler Suitable for 3 Dimensional plate marking.. Multifunctions The tool can draw 45, 90angle,T-line and hinge hole position line,etc. Clear ScaleClear scale,easy to locate angle,which is versatile Ideal Carpentry Tool Generally used for carpentry decoration scribing. Two measuring rulers with imperial scales and graphics are spliced into a commonly used measuring tool. The smallest scale is 116 inches, and the longest scale is 4.4 inches. The body of the ruler is thickened, one ruler is multi-purpose, it can be used for marking lines,measuring 45 and 90 degree angles, easy to disassemble and convenient to carry. The multi-angle measuring ruler is made of high-quality aluminum alloy, which will not break due to bending, and is more durable and stronger than plastic. Not rust, will not break, and have a longer service life.

Clear metric parallel multi-purpose drawing rolling ruler. Includes mini protractor at center. Increments in inches and centimeters. Each centimeter has a circle hole for drawing circles and ellipses. Drawing ruler is built in roller, clear scale, easy sliding, stable drawing, not easy to skew. With various formulas on the roller, can be calculated quickly in use. An excellent universal tool for making parallel lines, hatching, circles etc. Wide applications Versatile measuring ruler, with a protractor is suitable for drawing the desired figure, can also draw arc curve, horizontal parallel line, vertical parallel line, enough size for drawing.

For backyard residential use only unable to ship to a commercial address. This accessory is designed to fit a 7 Deck height ONLY. Max Weight Capacity 250 lbs. Meets andor exceeds ASTM and CPSIA safety standards for backyard residential use only. Additional support lumber required 2 X 4 X 96 Not Included Mounting hardware included. Lifetime warranty against cracks and breaks Made in the U.S.A.

Saker Contour Gauge Perfect Tool for Dad, Mom, Friends, Husband, DIYer . PRECISE SHAPE DUPLICATIONSaker Contour Gauge designed for winding pipes, circular frames, ducts and many objects, Ideal for fitting tiles, laminate, carpet, checking dimensions, moulding, etc.Useful tool for operations on car bodies, carpentry and for all kinds of modelling.. ADJUSTABLE AND LOCKING FEATURESaker contour guage can adjust the tightness according to your needs. After using the contour ruler for a period of time, you can easily adjust the tightnessOnce object has been contoured, lock contour gauge teeth in place for perfect traces every time.. GOOD MATERIAL AND PORTABLEThe contour gauge is made of high quality ABS plastic, high strength, rustproof and durable.. ESAY TO USEOur contour gauge measures 5 inch10inch ,can be used to measure the shape of irregular objectsinstant template for marking precise tile cuts .You just press the contour gauge on one of the shapes.Trim outline and cut into shape.. EXTENSIVE APPLICATIONContour gauge is used to locate profiles or edges and accurately transfer to the material to be cut.For any kind of work needs the contour duplication. In woodworking, auto body, auto metal sheet, stainless steel or any job of contour duplication..

Classically Trained Slide Rule Slipstick Mechanical Analog Calculator. Graphic of a Slide Rule with the phrase Classically Trained. Great nostalgic gift for retired engineer, math teacher, scientist, college professor from the boomer silent generations. Old Fashioned Slide Rule. Vintage Analog Calculator Design. Reminder of the time when physicists, engineers, scientists, and professors used slipsticks to calculate logarithms. This throwback is sure to bring back memories at your next college reunion. Lightweight, Classic fit, Double-needle sleeve and bottom hem.

Mr. Pen machinist rulers come in a set of three, each 6 inches long, designed for precision with markings for 164, 132 inches, and millimeters, including fine .5 mm increments.. These rulers are constructed from high-quality stainless steel, ensuring long-lasting durability and resistance to corrosion, making them suitable for any workshop or technical environment.. The rulers feature etched markings that are clear and easy to read against the steel background, providing accurate measurement for professional and DIY projects alike.. Ideal for a range of applications, from engineering and drafting to general household use, these rulers provide versatility with their metric and imperial measurement scales.. With three rulers included, you can have one for the workshop, one for the home office, and one for your portable tool kit, ensuring you're always prepared..

Only Authorized by Ufeel StoreProfessional pocket ruler is made of top Aluminum alloy quality and made by CNC prcess.The surface is anodized, wear-resistant, rust-proof, thick yet light enough to not be clunky.. Slide Rule with StopA fine notch is in the end of the ruler to place a pencil. The beefy stop is secured with two thumb screws, help stop and fix at any positioneffectively prevent slippage.. Laser markingThe numbers are engraved by laser, which can be used for tens of thousands of times without wearing out. The side is marked with 14, 12, and 34 depth measurement units to meet a variety of measurement needs.. Accurate Woodworking RulerWith Inch and Metric Indicators on both sides, this steel ruler has clear and accurate scale, easy to read.. All four edges feature an engraved scale incremented every 116th or 1mm depending on style.. Vertical Measurement T Track RulerWhen you need vertical measurement, slide the stop off the end and insert it into the cut-out blade and then your rule has a perfect stand to keep it upright.. 3 Combination Scribing Ruler6 inch160mm, 8 inch210mm, 12 inch300mm stainless steel pocket woodworking ruler, Including built in slide stops. Scribing ruler for woodworking, DIY, handicrafts, etc. Ideal measuring tool for carpenters..

PRECISE SIMPLE MEASUREMENT Our digital caliper precisely measure objects in 0-6 inch 0-150 mm with 0.01 0.1mm resolution and 0.01 0.2mm accuracy, just slide the caliper to measure.. 4 MEASURING FUNCTIONS This caliper measures inside, outside, depth, and step with two sets of jaws and a probe, easy to carry and hold.. WELL DESIGN This lightweight caliper is made of plastic, it is easy to carry anywhere. The unit can automatically turn off if no operated, you can easily change the measuring model to milimeter and inch.. WIDELY APPLICATION This vernier caliper is sutable for home and DIY, such as jewelry, gadgets and other household object.. AFTER SERVICE We supply 100 satisfaction service ,If you have any issues with our electronic digital Caliper, simply contact customer service for replacement, or refund..

DURABILITY - Stronger material and thicker then standard issue protractors. Does not become floppy or wear out easily.. MULTI SCALE - For with map scales 110,000 125,000 150,000 1100,000 1250,000. PROFESSIONAL USE - Inner protractor is marked in degrees and outer protractor is in mils. MILITARY STANDARD - Equivalent to Graphic Training Aid 5-2-12 Coordinate Scale and Protractor GTA 5-2-12, the standard issue Army protractor. VETERAN DESIGNED - LETHALIFE Tactical is a Veteran owned and operated small business brining you quality tools like the TMK Pro to help you succeed.

Geometry Set For All Levels Designed in USA. Package Includes 15 Piece 2 Metal Compasses 1 Study Compass 1 Graphic Compass, 1 Extra Lead for Graphic Compass, 1 Metal Divider, 2 Pencils for Compass, 1 Mechanical Pencil 0.5 mm for Compass, 1 Pack of 0.5 mm Lead for Mechanical Pencil, 1 Eraser, 1 Metal Pencil Sharpener, 1 Ruler 6, 1 Set Square 3060, 1 Set Square 45, 1 Protractor, 1 Protractor with Swing Arm 6. 15 Piece Geometry Set, Compass Set in a Reusable Pouch, Easy to Carry and Store. Inch and Centimeter Measurements. The Math SetGeometry Set Designed by Experienced Math Experts with All Essential Items for Teachers and Students at Any Level.

Size Diameter Approx. 4.3 inches 110 mm. Main Material Vinyl chloride.

12-Inch Precision Marking T-Rule - MENGJINGO 12-Inch T square ruler is precise. Micro-fine marking holes slot at every 116-Inch, 132-Inch, and 164-Inch scale position, with perfect, instant accuracy, work with 0.5mm refill lead mechanical pencil.. Rust Proof Stainless Steel T Square Woodpeckers Tools - MENGJINGO woodworking marking tools are made of rust proof stainless steel, more durable and sturdy than ordinary metal, allowing for years of use, corrosion-free and worry-free.. Clear Scale, Easy to Use - MENGJINGO t-square marking gauge comes with precise markings and graduations, it's easier to make a horizontal line.. Smooth Back Surface, Flexible Measurement - With the smooth back, MENGJINGO T square slide ruler is more convenient to slide on the board, so you could easily make the perfect 90 degree line.. Versatile Woodworking Marking T Ruler - A perfect marking tool for engineers. Thickness is 0.01inch, allowing you to locate your sharp pencil or scribe with absolute precision. Note The top of the ruler is pressed against the red part to ensure that the ruler is vertical.. 2 Years Warranty - MENGJINGO 12-Inch t square ruler comes with 2 years warranty..

We know that engineers and scientists rule. Show off with this vintage retro Slide Rule Mechanical Pocket Calculator. Are you into Mechanical, Civil, Electrical Engineering, Physics, Chemistry, Biology or Math and want to show your funny side.. Great gift idea for men, women, boys and girls who love vintage retro slide rules. As an engineer, mathematician, or scientist, show your vintage knowledge with old slide rule tee.. Lightweight, Classic fit, Double-needle sleeve and bottom hem.

Used Book in Good Condition.

1 Training tool used by Colleges, Universities and Training Centers. SuperHeat SubCooling charging of both R410a and R22. Duct Calculator that calculates CFM of Metal and Flex Duct. Access to approximately 100 free tutorials by scanning the QR code on the tool. Pressure Drop and Sizing for - Rectangular Metal, Round Metal, AND Round Vinyl Flex.

Check out this awesome shirt that features a vintage retro blueprint design of a SLIDE RULE. If you are an engineer, mathematician, or scientist, who used old mechanical pocket calculator sliderule, this is the tee for you. Lightweight, Classic fit, Double-needle sleeve and bottom hem.