Bell Demonstration Model, All The Components Of Electric Bell Are Mounted On A Large Panel. Allwiring Is Visible And Parts Are Of Large Size. Operates On 4-6 Volts Dc, Mounted On A Large Panel, All Parts Easily Visible, Rigid Constructions
Kit Lead An Element Of Danger Refill, Contains: Student instructions, Santiagos blood sample, Lead Test Paper, Blood Lead Concentration Color Chart, Simulated samples of dust, water, soil, and pottery, 4 labeled droppers, 4 Lead Test Swabs, Lead Test Sheet
Bourdon Gauge, Circular Gauge Of Dia. 100mm, Dial Reads 0-2.5Kg/Cm2, Circular Gauge Having Overall Dia. Of 100 mm And A Depth Of 40 mm The Dial Reads 0-2.5 Kg/Cm2 Dia About 100 mm. An Actual Working Gauge Is Mounted In Our Specially Designed Transparent Polycarbonate Case