1The NC-015103C has 3 versions. The following information will help you de-termine what model you use.Version 1The front cover plate has the words PAR and SELIt has preset settings from the factory.It can be calibrated only.Version 2The front cover plate has no words. It is blank.The switch settings are 1,3,6 ON and all otherswitches are OFF see drawing 1 page 2Version 3The front cover plate has no words. It is blank. Identical to version 2The switch settings are 1,3 ON; all other switches are OFF. See drawing 2 page 3You cannot tell Ver 2 and Ver 3 apart from the outside. Only re-moving the front cover plate and examining the relay inside willtell you which version you have. Ver 2 relay is thicker than Ver 3.Version3Version2©2010 Newton Crouch Inc. Rev 8.19.10 This information is the property of Newton Crouch Inc. and is loaned confidentially to our customer for his sole use. It must not be used in any waydetrimental to our interest or shared with outside parties. O:\Production\Technical Tips\SSM NC-015103CNCI Spinner Speed Monitor NC-015103CVersion 2 is approximately 1 5/8” thickVersion 3 is approximately 1” thick

NCI NC-015103C Quick Start Manual