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Seat tube sizing gauge — image 1
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Seat tube sizing gauge

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Gauges based on Stein's very expensive sizing gauges (about $100 for the pair). Used to measure the inner diameter of…

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Gauges based on Stein's very expensive sizing gauges (about $100 for the pair).

Used to measure the inner diameter of your bicycle's seat tube to determine your seat post size.

Obviously accuracy depends on material shrinkage, etc. Probably should run a test print.

These are hollow to save material. Little more than 5 mm wall thickness throughout.

Debossed the diameters in 1 mm. Each segment is 30 mm long. Last segment is 50 mm long, & has an axially centered hole to help extract it if needed.

Included images referenced to find out what sizes Stein used.

One of them takes care of the range from 25.4 - 27.4 mm, the other 28.4 - 31.6 mm.

I included the SLDPRTs in case you want to edit them. Be aware that the wrap/deboss feature is fairly intensive. If you have an older computer, it may take a minute.

Category: Tools

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