Top 10 Best Slide Rule Calculator

Mr. Pen 12-digit calculator is perfect for completing basic numerical calculations, making it ideal for office, primary school, market, or even home use. It features big, sensitive keys that are easy to press down and offer quick data entry.. The mechanical switch buttons offer a responsive and satisfying click with each press, similar to a mechanical keyboard, improving the overall user experience and precision of data entry. Equipped with essential functions like memory recall, percentage calculation, and more, it meets a variety of computational needs.. Mr. Pen calculator is portable and small in size at 6.2 x 4.4 inches, so it doesn't take up much desk space but is still comfortably sized for easy usage. It also has a large 12-digit display, increasing its visibility from any angle.. Operating on just one AAA battery not included, this calculator is designed with an automatic shutdown feature that activates after 10 minutes of inactivity, conserving battery life and ensuring longevity.. Mr. Pen calculator is the perfect tool for quickly dealing with everyday calculation problems in various settings such as schools, offices, or even at home It offers a fast, efficient, and user-friendly experience that makes it an ideal choice for anyone looking for a reliable calculator..

Calculates quantity of sand, gravel or crushed stone needed to cover and area. Made in USA. Very easy to use.. Great Christmas gift for the contractor in your life.

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.

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.

1 Training tool used by College, Universities and Training Centers. SuperHeat and 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.

Calculates quantity of concrete required to fill a rectangular or round area.. Calculates concrete required to fill cylinders and piers. This slide will calculate quantities up to 200 yards.. Very easy to use.. Great Christmas gift for the contractor in your life.

Calculates quantity of concrete required to fill a rectangular or round area.. Calculates concrete required to fill cylinders and piers. This slide will calculate quantities up to 100 yards.. Very easy to use.. You are purchasing two slides..

Double Sided with Flex Duct Calculator. Flexible Duct Friction Loss Calculator. As specified in the Air Diffusion Counci's Flexible Performance Installation Standards Green Book. Replaces Supersedes Flex Duct Flexible Duct Calculator 34-3453-01 34345301 Flexible Duct Friction Loss Calculator.

Calculates quantity of concrete required to fill a rectangular or round area.. Calculates concrete required to fill cylinders and piers. This slide will calculate quantities up to 200 yards.. Very easy to use.. Great Christmas Gift for the contractor in your life.

2014 Release - NEW Improved SuperCool Slide Rule. Including both SuperHeat and SubCooling of R410a and R22. Duct Calculator that calculates CFM. conversion for Smooth Metal to Insulation Lined Metal. Pressure Drop and Sizing for - Rectangular Metal, Round Metal, AND Round Vinyl Flex.