Shopping security

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.
Ships within 48 hours · Estimated delivery Jun 30 - Jul 5
US$40
Get nowSign up to your membership to get coupons up to
15%
Get nowOpportunity to enjoy order discount up to 15% off
Top-Converting Item to Boost Your Average Order