BAR AND GAUGE PSAW |
|
| |
|
|
| BAR AND GAUGE PSAW
(1210 B ) |
|
For illustrating expansion by heating and contraction by cooling. Comprising a mild steel bar 110x10mm, on rod with wooden handle, overall length 280mm approx, with metal cast gauge, sliding fit over ends of bar with hole 10mm bore, in one arm.
|
|
|
|
|
