Technical Pamphlets For Workmen PW H 6: Underground Maintenance de [Post Office Engineering Department] - 1934

London: P.O. Engineering Department, 1111. First Thus. . Folder. Good. 4to. A good copy with some creasing to cover edges and back cover corner, minor stains to both covers. Top corners of most pages creased. 51 roneo sheets bound in brown soft card covers. nd but probably 1948-50. Includes: Electro-acoustic devices; Description of various types of transmitter; Reproduction of gramophone reocrds; the gramophone pick-up; resistors for use at radio frequencies; capacitors; simple aerial systems. Immediate despatch from the UK.

HMSO,, 1919. 8vo., with illustrations and diagrams in the text; original blue wrappers, wire-stitched as issued, a near fine copy. VERY SCARCE IN THIS CONDITION.

HMSO,, [1946]. 8vo., with illustrations and diagrams in the text; original blue wrappers, wire-stitched as issued, a near fine copy. The sole pamphlet in this Group. VERY SCARCE, ESPECIALLY IN THIS CONDITION.

HMSO,, 1935. 8vo., with illustrations and diagrams in the text; original blue wrappers, wire-stitched as issued, a near fine copy. VERY SCARCE IN THIS CONDITION.

HMSO,, 1936. 8vo., with illustrations and diagrams in the text; original blue wrappers, wire-stitched as issued, a near fine copy. VERY SCARCE IN THIS CONDITION.

HMSO,, 1936-[1937]. 3 vols., [of 5], 8vo., with illustrations and diagrams in the text; original blue wrappers, wire-stitched as issued, covers lightly dust-soiled else a very good, clean collection. The collection comprises K1: Electric Lighting; K4: Pneumatic Tube Systems; K5: Gas and Petrol Engines. With several errata slips pasted in text as appropriate. GROUP COLLECTIONS OF THIS NOTABLE AND HISTORIC SERIES ARE VERY SCARCE.

HMSO,, 1935[-1938]. 3 vols., [of 4], 8vo., with illustrations and diagrams in the text, numerous errata slips pasted in text as appropriate; original blue wrappers, wire-stitched as issued, covers lightly dust-soiled else a very good, clean collection. The collection comprises G1: Maintenance of Secondary Cells; G3: Maintenance of Power Plant for Telegraph and Telephone Purposes; G4: Telegraph Battery Power Distribution Boards. This Group wants only G2: Power Plant for Telegraph and Telephone Purposes. With several errata slips pasted in text as appropriate. GROUP COLLECTIONS OF THIS NOTABLE AND HISTORIC SERIES ARE VERY SCARCE.

HMSO,, 1928[-1938]. 3 vols., 8vo., with illustrations and diagrams in the text; original blue wrappers, wire-stitched as issued, covers lightly dust-soiled else a remarkably well-preserved, bright, clean set. The set comprises E1: Automatic Telephony Step by Step Systems; E2: Automatic Telephony: Coder Call Indicator (C.C.I.) Working; E3: Automatic Telephony: Keysending 'B' Positions. COMPLETE GROUPS OF THIS NOTABLE AND HISTORIC SERIES ARE RARE.

HMSO,, 1919-[1938]. 6 vols., [of 8], 8vo., with illustrations and diagrams in the text, numerous errata slips pasted in text as appropriate; original blue wrappers, wire-stitched as issued, covers lightly dust-soiled else a very good, clean collection. The collection comprises F2: Subscribers' Apparatus. CBS Part I; F3: Subscribers' Apparatus. Magneto; F4: Private Branch Exchanges, Common Battery System; F5: Private Branch Exchange, C.B. Multiple No. 9; F7: House Telephone Systems; F8: Wiring of Subscribers' Premises. This Group wants only F1: Subscribers' Apparatus CB; F6: Private Branch Exchange. Magneto. GROUP COLLECTIONS OF THIS NOTABLE AND HISTORIC SERIES ARE VERY SCARCE.

HMSO,, 1919[-1938]. 7 vols., [of 8], 8vo., with illustrations and diagrams in the text; original blue wrappers, wire-stitched as issued, a remarkably well-preserved, bright, clean collection. The collection comprises B1: Elementary Principles of Telegraphy and Systems up to Morse Duplex; B2: Telegraph Concentrators; B3: Wheatstone System Morse Keyboard Perforators; B4: Quadruplex, Quadruplex Repeated Circuits and Telegraph Repeaters, Simplex and Duplex; B5: Hughes Type-Printing Telegraph; B6: Baudot Multiplex Type-Printing Systems; B7: Western Electric Duplex Multiplex. Murray Duplex Multiplex. Siemens & Halske Automatic Type-Printing Systems. The set wants only B8: Fire Alarm Systems. GROUP COLLECTIONS OF THIS NOTABLE AND HISTORIC SERIES ARE RARE.