This Precision Non-Magnetic Gauge Group is the regular three-unit group.
This group consists of:
(1) 32" gauge unit
(1) 36" gauge units
(1) 40" gauge unit
(4) 8-1/2" vertical scales
(4) 11-1/2" vertical scales
(2) 16-1/2" vertical scales
(4) 22" vertical scales
(1) instruction manual
(1) frame gauge rack