Devtra Inc.
2441 Lakeshore Rd. W
P.O. Box 70024, Oakville, ON
Also another URL: www.devtra.com & www.thechecker.net
DEVTRA Inc. manufactures The 'CHECKER' Inspection check-list
books for operators and drivers to use when inspecting their
vehicles. Have many titles including: Dumptrucks, Tractor-Trailer, ...