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This page lists useful gadgets for mechanical engineers. These are all handy items that can be helpful to have at your desk or out on the shop floor.

All items are linked to Amazon for purchase.


Calipers are always helpful to have around, whether you're inspecting dimensions of parts, or you just need to get your bearings on a size as your're designing a part.

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Surface Finish Comparator

A surface finish comparator can be useful to help you decide what surface finish to call out on a part.

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Even though Excel is always close at hand, it can still be incredibly helpful to just reach for a calculator when you need it. The TI-89 is a powerful, top-of-the-line graphing calculator.

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TI-36X Pro

The TI-36X Pro is a scientific calculator that is approved by NCEES for use on the Principles and Practice of Engineering (PE) exam. There are a handful of approved calculators, but this one is a great choice.

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Bolt Slider Quick Reference

This is a useful reference that includes bolt size data, drill/tap sizes, hole tolerances, sheet metal bend radii, beam deflection equations, weld symbols, GD&T symbols, surface finish reference, and more.

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Bolt & Nut Size Gauge

This is helpful for quickly checking the sizes of bolts, nuts, drill bits, and thread pitch.

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Feeler Gauge

This is useful for quickly measuring the width of a gap.

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Stainless Steel Rule

This is useful for quick measurements or as a straight edge.

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Magnifying Glass

It can be helpful to have a magnifying glass on hand for inspecting drawings and parts. This one has a nice large viewing area with LED illumination.

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