Skeletal muscle mechanics can be measured with any of our systems, 1200A/1205A, 1300A/1305A, 1400A, 1500A, 1600A, 1700A. The main determinant for which system is best suited would be the muscle preparation being used. For whole muscle (i.e. EDL, SOL, Diaphragm strips) or whole animal, 1200A/1205A, 1300A/1305A and 1500A (isolated whole muscle or engineered constructs) can be used. For fiber/small bundle mechanics, the 1400A (permeabilized or intact) or 1500A (intact) would be recommended. If you’re looking to measure from permeabilized cells the 1600A is best and for single myofibrils our 1700A system is used.