Scissors, Dissecting, Fine Points

Catalogue No. 4011500/2

Selected soft wood in one piece. Pin can be easily pressed with the help of hand only. The frame edge 17mm deep with linseed oil protection.
Length 550 x Width 400 mm

Catalogue No. 4011750/2

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.

Catalogue No. 4011800

For comparing rates of absorption or evolution of gases by small organisms during respiration. The apparatus comprises two stoppered glass boiling tubes connected by three way taps to either limbs of U shaped graduated manometer. One tube holds the organisms and has a syringe for altering the level of liquid in the manometer during setting up. The other tube acts as a control thermo-barometer. CO2 given off by the respiring organisms is absorbed by potassium hydroxide in the experimental chamber resulting in a change in the level of liquid in the manometer tube. Supplied complete with wire basket for supporting organisms and 1mL syringe.