All the basic setup tools in one kit.
 
Feeler Gauge to measure neck relief, action and nut saddle depth.  Metric 0.05mm to 1mm with 13 blades.  (0.05mm, 0.10, 0.15, 0.20, 0.25, 0.30, 0.40, 0.50, 0.60, 0.70, 0.80, 0.90, 1.0mm)
 
Precision Metal Rule. 15cm/6inches accurate to 0.5mm or 1/32".
 
Double Sided Setup Reference Card.
 
Feeler Gauge has Polymer No Rust Casing