The torsion times : a publication of the national 400-day clock chapter #168.
The torsion times : a publication of the national 400-day clock chapter #168.
The torsion times : quarterly journal of the national 400-day clock chapter #168 The torsion times : quarterly journal of the international 400-day clock chapter #168
- volumes : illustrations ; 29 cm
- Vol. 1, no. 1 (1996)-
Clocks and watches--Periodicals.
Torsion pendulum--Periodicals.
Clocks and watches--Periodicals.
Torsion pendulum--Periodicals.