1. New approximating polynomials for the treatment of measurement results

   • A. S. Nemirovskii
   • S. A. Ivankov

   General Problems of Metrology Pages: 597 - 605

2. Establishment of international skeleton tables for the thermodynamic properties of industrially important gases

   • V. V. Sychev
   • A. M. Sirota
   • N. I. Gorbunova

   State System of Standard Reference Data Pages: 606 - 608

3. Interference device for measuring displacements

   • A. N. Fedotov
   • B. M. Kublanov

   Linear Measurements Pages: 609 - 613

4. System for multichannel measurement and centralized digital recording of the rotation of shafts

   • M. B. Maizel'

   Mechanical Measurements Pages: 614 - 616

5. Methods for determining the rigidity of universal tensile test machines

   • G. Z. Lomaev

   Mechanical Measurements Pages: 617 - 619

6. Errors in manual processing of vibrograms

   • D. I. Fedotov

   Mechanical Measurements Pages: 620 - 622

7. Application of the heat exchange theory to the investigation of conditions for obtaining temperature reference points

   • A. N. Gordov

   Thermotechnical Measurements Pages: 623 - 626

8. Certain properties of liquid manometric thermometers

   • I. A. Sychev

   Thermotechnical Measurements Pages: 627 - 630

9. Digital electrical measuring instruments with direct balancing

   • V. M. Shlyandin

   Electrical Measurements Pages: 631 - 634

10. Device for producing a 90‡ shift between two voltages with equal amplitudes over a wide frequency range

    • A. I. Gladskii
    • B. G. Kaduk

    Electrical Measurements Pages: 635 - 638

11. Computation of electrical measuring circuits by their minimum or tolerated errors

    • B. N. Dudkevich

    Electrical Measurements Pages: 639 - 643

12. Bandwidth of apparatus with magnetic recording

    • A. M. Denisov
    • L. V. Petrov

    Electrical Measurements Pages: 644 - 647

13. Computation of input transformers for amplifiers used with thermocouples and bolometers (operating frequency, size, internal noise)

    • V. I. Dianov-Klokov
    • A. D. Stakhovskii
    • I. A. Palitsyna

    Electrical Measurements Pages: 648 - 653

14. Problem of measuring the axial concentration coefficient in ultrasonic radiators

    • A. E. Reznikov
    • A. Ya. Snytko

    Acoustical Measurements Pages: 654 - 657

15. Balances for measuring ultrasonic intensity

    • O. E. Tsok

    Acoustical Measurements Pages: 658 - 659

16. Atomic hydrogen masers

    • G. A. Elkin
    • L. P. Elkina
    • É. M. Lipshits

    Reviews and Abstracts Pages: 660 - 666

17. Twelfth General Conference on Weights and Measures

    • V. O. Arutyunov
    • G. D. Burdun

    Information Pages: 667 - 669

18. Exhibition of the FRG instrument-making firms

    • L. Ya. Kvaskov

    Information Pages: 670 - 672

19. Automatic interference comparator for measuring graduated linear measures

    • L. N. Logacheva

    Information Pages: 673 - 677

20. Technical characteristics of maser frequency standards

    • G. A. Elkin

    Information Pages: 678 - 678

21. L. D. Bryzzhev (on his 60th birthday)

    Information Pages: 679 - 679

22. Portable installation for measuring speedometers and tachometers

    • Ya. E. Pel'ts

    Brief Reports and Readers' Letters Pages: 680 - 680

23. Transistorized electronic tachometer

    • V. I. Kirsa
    • V. I. Korol'kevich

    Brief Reports and Readers' Letters Pages: 681 - 682

24. Stroboscope with an adjustable flash phase angle

    • D. D. Yampol'skii

    Brief Reports and Readers' Letters Pages: 683 - 684

25. Thermoregulator

    • V. D. Gladkov
    • N. V. Nikitin

    Brief Reports and Readers' Letters Pages: 685 - 686

26. Programmed temperature regulation by means of an automatic recording potentiometer

    • N. P. Biront

    Brief Reports and Readers' Letters Pages: 687 - 688

27. Quartz resistance thermometer

    • A. M. Morokh
    • N. G. Mikhailus'

    Brief Reports and Readers' Letters Pages: 689 - 690

28. Utilization of apparatus V1-2 for testing quartz calibrators

    • L. G. Tubelis

    Brief Reports and Readers' Letters Pages: 691 - 691

29. “Vibrator” plant of the Leningrad Sovnarkhoz

    Brief Reports and Readers' Letters Pages: 692 - 692

30. Transistorized four-inch (∼102 mm) recording potentiometer for industry and scientific research

    Brief Reports and Readers' Letters Pages: 693 - 693

31. Subscription to the monthly scientific and technical journal “Optico-mechanical industry” is now open

    Brief Reports and Readers' Letters Pages: 694 - 694