Scalpels

Catalogue No. 4011830

For demonstrating and measuring the oxygen uptake in respiring material, germinating seeds. Bulbed glass vessel graduated 75 to 100 x 1ml. with levelling tube. Complete with stand.

Catalogue No. 4011350/1

All stainless steel, blunt end needle, length 95mm. Overall length 130mm.
*Straight Arrow

Catalogue No. 4011750/1

For measurement of systolic and diastolic blood pressure of human beings in metabolic rate. Mercury type manometer, manually operated instrument, includes inflatable cuff-arm with Velcro, inflating rubber bulb bellow with non-return air valve having captive air bleed screw, all connected through flexible rubber tubing. Comes in a metal box.