Manometer Subcategory_Reflection and Refraction allowing a sodium or filament

allowing a sodium or filament lamp to be aimed precisely onto a spectrometer slit or refraction-cell setup

letting students switch between low and mid-current scales without swapping instruments

Compact-turn 28 SWG bare copper wire on a 250g reel approximating 800 feet

5 inches with a 40 mm brass dial head

reference-grade for bridge work

Manometer Subcategory_Reflection and Refraction allowing a sodium or filamentGlass tubing 6 mm bore, 8 mm outside diameter and open at both ends. For use at moderate pressures, fabricated from glass tubing 6 mm bore, 8 mm outside diameter. The apparatus is open at both ends and is supplied unfilled, 250 mm long, 32 mm wide (75 mm wide including side arm).