Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 205
TRANSPARENT AMBER CURVES X … V \ 2086 2088 2086. Combination Curve of Transparent Amber.2088. Combination Curve of Transparent Amber. • each, $1.00.each, 1.80 \ 2090 2090. Spiral Logarithmic Curve of Transparent Amber, contains everycurve, limited onlv by its size, and can be used for intricatecalculations each, $1.75 Full…
Engineering instruments · Drawing instruments
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