| RefNo | AP/33/24/2 |
| Level | Item |
| Title | Unpublished figures, magnetic needles by Julius Roberts |
| Creator | Roberts; Julius (fl 1852) |
| Date | 1852 |
| Description | Two figures in coloured ink, labelled figures 1-2, showing a variety of magnetic needles constructed by Roberts.
Subject: Marine engineering / Magnetism / Scientific apparatus and instruments |
| Extent | 1p |
| Format | Drawing |
| PhysicalDescription | Ink on parchment paper |
| AccessStatus | Open |
| AccessConditions | Not available to view, off site for conservation. Please refer to digital surrogate on Science in the Making. |