| Plastic Rod-B Length approximate 30cms and 12mm dia. |
| Ebonite Rod-C Length approximate 30cms and 12mm dia. |
| Glass Rod -D Length approximate 30cms and 13mm dia. |
| Perspex Rod-E Highly finished length approximate 30cms and 12.5mm dia. |
| Compound Rod-F Half glass ,half brass length approximate 30cms and 13mm dia. |
| Compound Rod-G Half ebonite ,half brass length approximate 30cms and 12mm dia. |
