Heat & Light
        LIGHT SOURCE HIGH POWER (VERY) Q/I TYPE 12Vx100W
        LIGHT SOURCE HIGH POWER LAMP ON BASE BA15D 12V 15-21W
        LIGHT SOURCE LOW POWER SIMPLE 2 WIRES 2.5V MES
        LIGHT SOURCE LOW POWER SIMPLE 4mm SKT 2.5V MES
        LIGHT SOURCE LOW PWR ENCL 4mm SKTS 2.5V MES
        LIGHT SOURCE LOW PWR ENCL 4mm TERM 2.5V MES
        LINEAR EXPANSION APPARATUS STEAM DIAL INDICATOR
        MECHANICAL EQUIV. OF HEAT ('J' APPARATUS) OLD
        MIRROR 3x 90deg CORNERED 120mm SIDES
        OPTICAL BENCH & KIT 'HODSON' 6xLENS C/W L/BOX
        OPTICAL BENCH & KIT 'HODSON' 6xLENS W/O L/BOX
        ROD HEAT CONDUCTIVITY ALUM. 300x6mm DIA
        ROD HEAT CONDUCTIVITY BRASS 300x6mm DIA
        ROD HEAT CONDUCTIVITY COPPER 300x6mm DIA
        ROD HEAT CONDUCTIVITY IRON 300x6mm DIA
        RODS HEAT CONDUCTIVITY SET/4 BRASS COPPER IRON ALUM
        SCREEN FROSTED ACRYLIC W/FEET 200x200mm
        SPECTRAL LAMP MINI POWER SUPPLY & HOLDER COMBINED W/O LAMP
        SPECTROSCOPE PLASTIC W/CALIBRATED SCALE & ADJ. SLIT