1-10000Ω Plug-Type Brass Resistance Box, 17 Coils Subcategory_Wash Bottles Built to reveal stress fringes

Built to reveal stress fringes in transparent solids

1100-turn copper coil on a bobbin sized for a double C-core

3A standard rheostat in the high-resistance end of the line

Built for cell-structure comparison

One hundred numbered slots in a hardwood storage box hold standard microscope slides for ordered reference and classroom slide-library organization

1-10000Ω Plug-Type Brass Resistance Box, 17 Coils Subcategory_Wash Bottles Built to reveal stress fringesWidest range 17 coil plug type resistance box covering 1 ohm to 10k ohms with 21,110 ohms total at plus or minus 0. 1% on constantan windings, the precision standard for Kelvin bridge work.