Searl's Surface Tension Balance

Product Description

RSP-148 SEARL’S  SURFACE  TENSION BALANCE 1800.00

A cast iron base carries a vertical pillar terminating in a horizontal  frame . A chrome plated steel wire is stretched across the frame. A light weight metal pointer appx. 200mm long with an adjustable counterpoise is attached to the center of wire by mans of a small clamp. A plastic scale is carried on the end of the arm extending from the torsion frame and is calibrated 5-0-5. A small mass pan of 40mm dia is attached to the pointer. The sensitivity of the balance is ultimately dependant upon the modulus of elasticity of the torsion wire an the wire supplied.

RSP-149 SEARL’S THERMAL CONDUCTIVITY APP. 18mm rod   5400.00

12”X1”  Rod 6000.00 1.5”x12” Rod 11500.00

Comprising of a copper bar 25mm in diameter and 300mm in length fitted with a steam jacket heater at one end to be supplied from a steam boiler , and a copper water cool spiral at the other end. The bar has tube for inlet of water and for thermometer . Fitted in a superior quality wooden case. Packed with felt for thermal insulation and removable from the front showing the construction. Supplied without steam boiler and thermometer.