File #5349: "Combustion tube. A glass tube about 40 centimetres long with brass fittings and turned wooden knobs on either end. On one end the knob can be pulled or pushed to operate a plunger inside the tube."

Combustion tube. A glass tube about 40 centimetres long with brass fittings and turned wooden knobs on either end. On one end the knob can be pulled or pushed to operate a plunger inside the tube.

Title

Combustion tube. A glass tube about 40 centimetres long with brass fittings and turned wooden knobs on either end. On one end the knob can be pulled or pushed to operate a plunger inside the tube.