- Allied Measurement Systems Corp is the Heavy Capacity Specialist in the Illinois and Northern Indiana Area Featuring products like the Guide Rails. Allied Measurement Systems offers gusset bolted guide rails which add to the protection to your personnel and equipment. Operators get tactile feedback that they are too close to the edge so that accidents may be prevented. Guide rails can be delivered in many configurations. We can even work with your operation for custom solutions you may need to meet regulatory requirements.