![M.R.S Back to Back Gauge designed for OO Gauge (Available in various colours)](http://www.modelrailwaysolutions.co.uk/cdn/shop/products/oo_gauge_back_to_back_black_single_700x700.jpg?v=1614880565)
M.R.S Back to Back Gauge designed for OO Gauge (Available in various colours)
£2.80
SKU MRSBTBOO
A Useful tool for checking and adjusting the distance between the backs of wheelsets, which should be 14.4mm (OO Gauge)