Quality Tools & Supplies for Hobbys, DIY & Crafts - Micro-Mark Tools

Micro-Mark Coupler Gauge for HO Standard Gauge

Micro-Mark Coupler Gauge for HO Standard Gauge - Main image
$7.89 $11.95 In stock

Category: Mini Hand Tools

Coupler Gauge Prevents Derailments and False Uncoupling of Model Train
  • Check coupler, knuckle and trip pin heights
  • Prevents derailments and accidental uncoupling of scale model trains
  • Meets NMRA published standards
  • Forged from machined aluminum
  • Works with all brands of HO standard gauge couplers, Bachmann On30 and others.

The Micro-Mark Coupler Gauge ensures your HO, OO and On30 coupler and related component heights are to gauge. This finely machine aluminum gauge when used correctly, can prevent derailments and false uncoupling of model trains. Check coupler, knuckle and trip pin height for conformance to published NMRA standards. Compatible with all brands of HO standard gauge couplers, Bachmann® On30 couplers, and others. Made of machined aluminum. Simple to use.

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Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Natalie ★★★★★

Finally, a gauge that checks the knuckle and trip pin height too, not just the coupler. Solved a persistent uncoupling issue on three of my older cars almost instantly.

Victoria X. ★★★★★

Used it on every car on my layout and the trip pin check alone saved me from two spotted derailments that I’d been chasing for weeks. The gauge’s machined steps make it dead simple to see where the knuckle sits relative to the railhead.

Hannah R. ★★★★★

Finally, a gauge that actually checks the trip pin height instead of just the knuckle, so my locos stop false-coupling on switches. It’s solid metal and fits the NMRA specs perfectly, and I’ve used it on every car I own now.

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