Decade Resistance Box - 4 Decade, Standard Decade Resistance Box, Up To A Total Of 11, 110 Ohms, Resistance Resolution Is At 1, 10, 100, And 1000 Ohms, Decade Resistance Substitution Box Provides 4 Decade Ranges. Each Decade Is Selected With A Rotary Switch
Ray box, simple, safe and sturdy source of projected light for many classic optics experiments, produces parallel convergent rays across a plane horizontal surface and the rays are intense enough to be traced in natural light. Built in solid aluminum extrusion casing, 100-240V 50/60 Hz
Decade Resistance Box - 7 Decade, Portable Resistance Box, Built In Solid Metallic Body. Total Vol. 11.111110 Mega Ohms, It Is Built In Solid Metallic Body.Total Value As Well As Individual Values Are Available At All Levels, +/- 1% Tolerance & Are Of 2 Watts