Rail Gap Gauge Rail Gap Gauge is used for measuring the distance between two adjoining rails Benefits: Joint Gap Measuring Device shape: similar to carrot, tapered. This product is made of stainless steel , long service life. Easy to operate and easy to carry Model NW-BB Type Gap Gauge Material Stainless Steel Dimensions (L x W x H) (mm) 35*15*5cm Measure range 5-30mm Material Stainless steel MOQ 50 Pieces