| Year | 1919 |
| Date | 27-Nov |
| Volume | 41 |
| Issue | 970 |
| Page | 492 |
| Category | Electrical |
| Part | |
| Title | A Quadrant Electrometer |
| Author | J.H.M.Richards |
| Notes | Introductory. Materials, baseboard and levelling screws, view of finished instrument, the quadrants, elevation & plan showing construction, the glass case, levelling screws, arms & quadrants, details of the quadrants, the glass tube and fittings, the needle, mirror, and suspension, component parts, assembling and finishing, details of the scale & its stand, conclusion |