$3 Shipping on all Domestic Orders * Free International Shipping on Orders Over $150
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$28.95 Regular price
Unit price

$3 Shipping on all Domestic orders

FREE International Shipping on Orders Over $150

As functional as it is utilitarian, discover the multitude of uses for your Inchworm, a titanium "ruler in the round". Whether you're checking your tire tread depth or measuring the width of a broken fan belt, you'll find yourself reaching for the Inchworm more than you ever thought. You'll never get caught unprepared when you have this keychain ruler right at your fingertips. 

Inchworm Features:

  • 3/16" [4.76 mm] diameter 6Al-4V grade titanium rod
  • Grooves cut at 1/8" increments up to 3" long
  • Bead blasted to a uniform matte finish
  • New machined grooves cut every 1/2" and 1" marks for ease of reading
What you get:
  • (1) Inchworm
  • (1) 8.6 mm diameter split ring
  • (1) Snap clip for attachment to other items
  • Packaged in a foam-lined case

The Inchworm is made of durable 6Al-4V titanium. Known for its corrosion resistance, titanium is a lightweight metal with a very high strength-to-weight ratio. It could be described as having the strength of steel with a weight comparable to aluminum.

  • Diameter: 3/16" [4.76 mm]
  • Overall Length: 3-3/8" [85.7 mm]
  • Measuring length: 3" [76.2 mm]
  • Weight: 6.5 grams [.23 oz]
  • Check your tire tread depth
  • Check the width of a broken fan belt or hose for replacement
  • Checking nail and screw lengths
  • Use as a scale for map reading
  • Measure thickness of materials
  • Comparing different product sizes at the store
  • Job-related measurements
  • Visualizing the size of a product based on reading product size specifications
  • Comparing the physical size of a part with the product packaging specifications at the store (i.e. buying a replacement plumbing fitting)

TEC Accessories offers a 30 day no-questions-asked return policy on all of our products. If you are not satisfied with your purchase, for any reason, contact us to arrange a return/refund. In addition, all products carry a 90 day warranty against defects in materials or workmanship. Please contact us if you have any problem with your purchase that requires attention, and we will promptly make any necessary corrections.

Shipping Times

PLEASE NOTE: Due to the current logistics delays, shipping times may take longer than expected. This is especially true for International shipments, where delivery times can take weeks longer than usual. This is beyond our control, and we ask that you please be patient with expected deliveries until shipping companies get back to a more "normal" schedule.

We make every effort to process orders within one working day, however there may be slight delays depending upon the number of orders we receive, holiday periods and available staffing resources. Typically we will process all orders within no more than 2 working days.

Shipping times (from the time the package is dropped off at the carrier) will vary depending upon the carrier, method of shipment and destination. For example USPS Domestic First Class Mail should take between 2-3 days, but we have seen instances of 5-7 days. Domestic Priority Mail should take 1-2 days, but can take anywhere from 1-4 days. Domestic Express Mail should take one day, but that is only if your processed order is delivered to the post office before the cutoff time (typically 12:00 noon). Also keep in mind that weather and travel distance can have an effect on delivery times.

International shipments have even more variables that must be considered. A package sent by USPS First Class International can take anywhere from 1-3 weeks, sometimes longer depending upon the country. International shipments have the potential of being delayed by Customs, as well as having additional taxes or fees levied on a package. These are out of our control, and we advise that you become familiar with your specific country's shipping regulations to understand the impact to your shipment.

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Customer Reviews

Based on 10 reviews
Ron B.
Five Stars

A very useful tool and an attractive piece of art

Quality and useful.

Exactly as expected. Quality finish. Useful in measuring small and quick tasks.

Five Stars

very nice, solid little keyfob, will buy a few more for gifts

Bartley T. Shedron
Five Stars

Love It

More useful than expected

I eyeballed this thing for months before deciding to pull the trigger. It's a neat idea but I didn't know how much practical use it would get, being only 3" in 1/8" increments. But I actually have been using it quite a bit, more than expected. Not just to measure objects, but as a visual aid to envision the size of something based on specified measurements. And aside from novelty purposes, it actually helped me in a work bind. It's not really my responsibility but I found myself helping out a co-worker while he was away on travel by going to the hardware store and picking up some washers. I had the screw it was supposed to fit around and a spec for the outer diameter. The washers were labeled with size numbers, not measurements. Had I just been eyeballing it, I would have picked up the wrong washers, one 1/8" too large OD. The Inchworm let me easily identify the correct washer on the first trip. I didn't buy it for that reason, did not expect to have to do that task, but it sure came in handy when the situation came up. I do think the optional clip it comes with is too big, adds too much length to how it hangs off your keychain. I attached it directly to my quick-release "spider" keychain (like the "patent" keyholder) using the provided split ring and it's perfect.