Care and Maintenance of Underwater Breathing Apparatus, Parts 1 & 2

Recommendations for the Care and Maintenance of Underwater Breathing Apparatus, Parts 1 & 2. BS 4001.

2 stapled paperback booklets in cellophane cover.  Both in very good condition.
Part 1: Compressed air open circuit type. Inscribed on the cover in top right hand corner ‘ Sa/f’. 19 pages. No illustrations. 1966
Part 2: Standard Diving Equipment. Top corner of title page inscribed ’35[?]’. Top corner of back cover and last 8 pages are creased. 36 pages. B&W illustrations. 1967.

1966/67, British Standards Institution, London