A straight track jig designed for use with Clover House TT101 TT scale Modern PC Tie Strips, Clover House 11561 TT Scale Standard Gauge Modern Ties and MicroEngineering brand code 55 rail. This approximately 9 inch by 2.5 inch jig expertly milled from quarter inch aluminum stock allows you to firmly solder rail in gauge to Printed Circuit Board Ties. The opposite side allows you to lay wood ties spaced to 21 inch centers.