1-10000Ω Plug-Type Brass Resistance Box, 17 Coils Subcategory_Wash Bottles 3A standard rheostat in the

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

0 Type-B to Type-B cable connects data-logging sensors

Higher-output 65-watt soldering iron with a wooden bakelite handle

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

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

1-10000Ω Plug-Type Brass Resistance Box, 17 Coils Subcategory_Wash Bottles 3A standard rheostat in theWidest 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.