His publications are standard texts for ITI and ITC courses across India, following the latest NSQF and NCVT syllabi. Google Books Fitting Siddhant: Fitter Trade Theory (5th Edition) : Published by McGraw Hill
While the full textbook is rarely available legally as a free download, you can find supplementary study materials in PDF format on academic platforms: Fitter Trade Theory by Balbir Singh PDF - Scribd Iti Fitter Theory Book Balbir Singh Pdf
there is no official single-source free PDF for the ITI Fitter Theory Balbir Singh His publications are standard texts for ITI and
: Fasteners (rivets, solders), welding, and assembly techniques. and assembly techniques.